introduce organizations

app/views/admin/organizations/_form.html.haml

@@ -0,0 +1,13 @@
+= semantic_form_for(@organization) do |f|
+  = f.inputs name: 'Organization details' do
+    = f.input :name, as: :string, required: true
+    = f.input :description, input_html: { rows: 5 }, placeholder: 'Decribe about your organization..'
+    = image_tag f.object.picture.thumb.url if f.object.picture?
+    - if @organization.picture
+      = image_tag(@organization.picture.thumb.url, width: '20%')
+    = f.input :picture
+  %p.text-right
+    - if @organization.new_record?
+      = f.submit 'Create Organization', class: 'btn btn-success'
+    - else
+      = f.submit 'Update Organization', class: 'btn btn-success'

app/views/admin/organizations/index.html.haml

@@ -0,0 +1,31 @@
+.row
+  .col-md-12
+    .page-header
+      %h1 Organizations
+      .btn-group.pull-right
+        = link_to 'Add Organization', new_admin_organization_path, class: 'btn btn-success pull-right'
+      %p.text-muted
+        Manage organizations in OSEM
+  .row
+    .col-md-12
+      %table.table.table-hover.datatable
+        %thead
+          %th Name
+          %th Upcoming Conferences
+          %th Past Conferences
+          %th Actions
+        %tbody
+          - @organizations.each do |organization|
+            %tr
+              %td
+                = organization.name
+              %td
+                = organization.conferences.count
+              %td
+                = organization.conferences.count
+              %td
+                .btn-group
+                  = link_to 'Edit', edit_organization_path(organization),
+                    method: :get, class: 'btn btn-primary'
+                  = link_to 'Delete', admin_organization_path(organization),
+                    method: :delete, class: 'btn btn-danger'