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diff --git a/app/assets/images/images/ui-icons_eeeeee_256x240.png b/app/assets/images/images/ui-icons_eeeeee_256x240.png
deleted file mode 100644
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diff --git a/app/assets/images/images/ui-icons_ffffff_256x240.png b/app/assets/images/images/ui-icons_ffffff_256x240.png
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diff --git a/app/assets/javascripts/osem.js b/app/assets/javascripts/osem.js
index c0cc7101..08c8e743 100644
--- a/app/assets/javascripts/osem.js
+++ b/app/assets/javascripts/osem.js
@@ -179,167 +179,6 @@ $( document ).ready(function() {
     } );
 });
 
-/* Set the defaults for DataTables initialisation */
-$.extend( true, $.fn.dataTable.defaults, {
-    "sDom": "<'row-fluid'<'span6'l><'span6'f>r>t<'row-fluid'<'span6'i><'span6'p>>",
-    "sPaginationType": "bootstrap",
-    "oLanguage": {
-        "sLengthMenu": "_MENU_ items per page"
-    }
-} );
-
-/* Default class modification */
-$.extend( $.fn.dataTableExt.oStdClasses, {
-    "sWrapper": "dataTables_wrapper form-inline"
-} );
-
-/* API method to get paging information */
-$.fn.dataTableExt.oApi.fnPagingInfo = function ( oSettings )
-{
-    return {
-        "iStart":         oSettings._iDisplayStart,
-        "iEnd":           oSettings.fnDisplayEnd(),
-        "iLength":        oSettings._iDisplayLength,
-        "iTotal":         oSettings.fnRecordsTotal(),
-        "iFilteredTotal": oSettings.fnRecordsDisplay(),
-        "iPage":          oSettings._iDisplayLength === -1 ?
-            0 : Math.ceil( oSettings._iDisplayStart / oSettings._iDisplayLength ),
-        "iTotalPages":    oSettings._iDisplayLength === -1 ?
-            0 : Math.ceil( oSettings.fnRecordsDisplay() / oSettings._iDisplayLength )
-    };
-};
-
-$.fn.dataTableExt.oApi.fnReloadAjax = function ( oSettings, sNewSource, fnCallback, bStandingRedraw )
-{
-    if ( typeof sNewSource != 'undefined' && sNewSource != null ) {
-        oSettings.sAjaxSource = sNewSource;
-    }
-
-    // Server-side processing should just call fnDraw
-    if ( oSettings.oFeatures.bServerSide ) {
-        this.fnDraw();
-        return;
-    }
-
-    this.oApi._fnProcessingDisplay( oSettings, true );
-    var that = this;
-    var iStart = oSettings._iDisplayStart;
-    var aData = [];
-
-    this.oApi._fnServerParams( oSettings, aData );
-
-    oSettings.fnServerData.call( oSettings.oInstance, oSettings.sAjaxSource, aData, function(json) {
-        /* Clear the old information from the table */
-        that.oApi._fnClearTable( oSettings );
-
-        /* Got the data - add it to the table */
-        var aData =  (oSettings.sAjaxDataProp !== "") ?
-            that.oApi._fnGetObjectDataFn( oSettings.sAjaxDataProp )( json ) : json;
-
-        for ( var i=0 ; i<aData.length ; i++ )
-        {
-            that.oApi._fnAddData( oSettings, aData[i] );
-        }
-
-        oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();
-
-        if ( typeof bStandingRedraw != 'undefined' && bStandingRedraw === true )
-        {
-            oSettings._iDisplayStart = iStart;
-            that.fnDraw( false );
-        }
-        else
-        {
-            that.fnDraw();
-        }
-
-        that.oApi._fnProcessingDisplay( oSettings, false );
-
-        /* Callback user function - for event handlers etc */
-        if ( typeof fnCallback == 'function' && fnCallback != null )
-        {
-            fnCallback( oSettings );
-        }
-    }, oSettings );
-};
-
-/* Bootstrap style pagination control */
-$.extend( $.fn.dataTableExt.oPagination, {
-    "bootstrap": {
-        "fnInit": function( oSettings, nPaging, fnDraw ) {
-            var oLang = oSettings.oLanguage.oPaginate;
-            var fnClickHandler = function ( e ) {
-                e.preventDefault();
-                if ( oSettings.oApi._fnPageChange(oSettings, e.data.action) ) {
-                    fnDraw( oSettings );
-                }
-            };
-
-            $(nPaging).addClass('pagination').append(
-                '<ul>'+
-                    '<li class="prev disabled"><a href="#">&larr; '+oLang.sPrevious+'</a></li>'+
-                    '<li class="next disabled"><a href="#">'+oLang.sNext+' &rarr; </a></li>'+
-                    '</ul>'
-            );
-            var els = $('a', nPaging);
-            $(els[0]).bind( 'click.DT', { action: "previous" }, fnClickHandler );
-            $(els[1]).bind( 'click.DT', { action: "next" }, fnClickHandler );
-        },
-
-        "fnUpdate": function ( oSettings, fnDraw ) {
-            var iListLength = 5;
-            var oPaging = oSettings.oInstance.fnPagingInfo();
-            var an = oSettings.aanFeatures.p;
-            var i, ien, j, sClass, iStart, iEnd, iHalf=Math.floor(iListLength/2);
-
-            if ( oPaging.iTotalPages < iListLength) {
-                iStart = 1;
-                iEnd = oPaging.iTotalPages;
-            }
-            else if ( oPaging.iPage <= iHalf ) {
-                iStart = 1;
-                iEnd = iListLength;
-            } else if ( oPaging.iPage >= (oPaging.iTotalPages-iHalf) ) {
-                iStart = oPaging.iTotalPages - iListLength + 1;
-                iEnd = oPaging.iTotalPages;
-            } else {
-                iStart = oPaging.iPage - iHalf + 1;
-                iEnd = iStart + iListLength - 1;
-            }
-
-            for ( i=0, ien=an.length ; i<ien ; i++ ) {
-                // Remove the middle elements
-                $('li:gt(0)', an[i]).filter(':not(:last)').remove();
-
-                // Add the new list items and their event handlers
-                for ( j=iStart ; j<=iEnd ; j++ ) {
-                    sClass = (j==oPaging.iPage+1) ? 'class="active"' : '';
-                    $('<li '+sClass+'><a href="#">'+j+'</a></li>')
-                        .insertBefore( $('li:last', an[i])[0] )
-                        .bind('click', function (e) {
-                            e.preventDefault();
-                            oSettings._iDisplayStart = (parseInt($('a', this).text(),10)-1) * oPaging.iLength;
-                            fnDraw( oSettings );
-                        } );
-                }
-
-                // Add / remove disabled classes from the static elements
-                if ( oPaging.iPage === 0 ) {
-                    $('li:first', an[i]).addClass('disabled');
-                } else {
-                    $('li:first', an[i]).removeClass('disabled');
-                }
-
-                if ( oPaging.iPage === oPaging.iTotalPages-1 || oPaging.iTotalPages === 0 ) {
-                    $('li:last', an[i]).addClass('disabled');
-                } else {
-                    $('li:last', an[i]).removeClass('disabled');
-                }
-            }
-        }
-    }
-} );
-
 /* Commodity function for modal windows */
 
 window.build_dialog = function(selector, content) {
diff --git a/app/models/datatable.rb b/app/models/datatable.rb
deleted file mode 100644
index 03ec9038..00000000
--- a/app/models/datatable.rb
+++ /dev/null
@@ -1,98 +0,0 @@
-# derived from http://railscasts.com/episodes/340-datatables
-# handles server side multi-column searching and sorting
-
-class Datatable
-  delegate :params, :h, :raw, :link_to, :number_to_currency, to: :@view
-
-  def initialize(klass, view)
-    @klass = klass
-    @view = view
-  end
-
-  def as_json
-    {
-        sEcho: params[:sEcho].to_i,
-        iTotalRecords: @klass.count,
-        iTotalDisplayRecords: items.total_entries,
-        aaData: data
-    }
-  end
-
-  def data
-    []
-  end
-
-  def columns
-    []
-  end
-
-  private
-
-  def items
-    @items ||= fetch_items
-  end
-
-  def fetch_items
-    items = filtered_list
-    items = selected_columns(items)
-    items = items.order(sort_order)
-    items = items.page(page).per_page(per_page)
-    if params[:sSearch].present?
-      items = items.where(quick_search)
-    end
-    items
-  end
-
-  def filtered_list
-    @klass.scoped
-  end
-
-  def selected_columns items
-    items
-  end
-
-  def quick_search
-    search_for = params[:sSearch].split(' ')
-    terms = {}
-    which_one = -1
-    criteria = search_for.inject([]) do |mem, atom|
-      which_one += 1
-      terms["search#{which_one}".to_sym] = "%#{atom}%"
-      mem << "(#{search_cols.map{|col| "#{col} like :search#{which_one}"}.join(' or ')})"
-    end.join(' and ')
-    [criteria, terms]
-  end
-
-  def page
-    params[:iDisplayStart].to_i/per_page + 1
-  end
-
-  def per_page
-    params[:iDisplayLength].to_i > 0 ? params[:iDisplayLength].to_i : 10
-  end
-
-  def sort_order
-    colnum = 0
-    sort_by = []
-    while true
-      break if !sorted?(colnum)
-      sort_by << "#{sort_column(colnum)} #{sort_direction(colnum)}"
-      colnum += 1
-    end
-    sort_by.join(', ')
-  end
-
-  def sorted? index=0
-    !params["iSortCol_#{index}"].nil?
-  end
-
-  def sort_column index=0
-    index = "iSortCol_#{index}"
-    columns[params[index].to_i]
-  end
-
-  def sort_direction index=0
-    index = "sSortDir_#{index}"
-    params[index] == 'desc' ? 'desc' : 'asc'
-  end
-end