Merge branch '17810-fork-page-ux-is-outdated' into 'master'

Updated fork page UI

## What does this MR do?

Updates fork page to new UI.

## Are there points in the code the reviewer needs to double check?

😕 

## Why was this MR needed?

'coz new forks page looks awesome, that's why!

## What are the relevant issue numbers?

Closes #17810.

## Screenshots (if relevant)

![Screen_Shot_2016-07-07_at_03.43.45](/uploads/d4be046d1a6b043f3691633b7ec396c6/Screen_Shot_2016-07-07_at_03.43.45.png)

[youtube video](https://youtu.be/YpXPCxWGCnY)

## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5007

app/assets/stylesheets/pages/projects.scss

@@ -333,13 +333,47 @@ a.deploy-project-label {
 }
 
 .fork-namespaces {
+  .row {
+    -webkit-flex-wrap: wrap;
+    display: -webkit-flex;
+    display: flex;
+    flex-wrap: wrap;
+    justify-content: flex-start;
+
     .fork-thumbnail {
+      @include border-radius($border-radius-base);
+      background-color: $white-light;
+      border: 1px solid $border-white-light;
+      height: 202px;
+      margin: $gl-padding;
       text-align: center;
-    margin-bottom: $gl-padding;
-
+      width: 169px;
+      &:hover, &.forked {
+        background-color: $row-hover;
+        border-color: $row-hover-border;
+      }
+      .no-avatar {
+        width: 100px;
+        height: 100px;
+        background-color: $gray-light;
+        border: 1px solid $gray-dark;
+        margin: 0 auto;
+        @include border-radius(50%);
+        i {
+          font-size: 100px;
+          color: $gray-dark;
+        }
+      }
+      a {
+        display: block;
+        width: 100%;
+        height: 100%;
+        padding-top: $gl-padding;
+        color: $gl-gray;
         .caption {
-      padding: $gl-padding 0;
           min-height: 30px;
+          padding: $gl-padding 0;
+        }
       }
 
       img {
@@ -347,6 +381,7 @@ a.deploy-project-label {
         max-width: 100px;
       }
     }
+  }
 }
 
 .project-import {

app/views/projects/forks/new.html.haml

 - page_title "Fork project"
-- if @namespaces.present?
-  %h3.page-title Fork project
-  %p.lead
-    Click to fork the project to a user or group
-  %hr
 
+.row.prepend-top-default
+  .col-lg-3
+    %h4.prepend-top-0
+      Fork project
+    %p
+      A fork is a copy of a project.
+      %br
+      Forking a repository allows you to make changes without affecting the original project.
+  .col-lg-9
     .fork-namespaces
+      - if @namespaces.present?
+        %label.label-light
+          %span
+            Click to fork the project to a user or group
           - @namespaces.in_groups_of(6, false) do |group|
             .row
               - group.each do |namespace|
-          .col-md-2.col-sm-3
+                - avatar = namespace_icon(namespace, 100)
                 - if fork = namespace.find_fork_of(@project)
-              .fork-thumbnail
-                = link_to project_path(fork), title: "Visit project fork", class: 'has-tooltip' do
-                  = image_tag namespace_icon(namespace, 100)
+                  .fork-thumbnail.forked
+                    = link_to project_path(fork) do
+                      - if /no_((\w*)_)*avatar/.match(avatar)
+                        .no-avatar
+                          = icon 'question'
+                      - else
+                        = image_tag avatar
                       .caption
-                    %strong
                         = namespace.human_name
-                    %div.text-primary
-                      Already forked
-
                 - else
                   .fork-thumbnail
-                = link_to namespace_project_forks_path(@project.namespace, @project, namespace_key: namespace.id), title: "Fork here", method: "POST", class: 'has-tooltip' do
-                  = image_tag namespace_icon(namespace, 100)
+                    = link_to namespace_project_forks_path(@project.namespace, @project, namespace_key: namespace.id), method: "POST" do
+                      - if /no_((\w*)_)*avatar/.match(avatar)
+                        .no-avatar
+                          = icon 'question'
+                      - else
+                        = image_tag avatar
                       .caption
-                    %strong
                         = namespace.human_name
-
-    %p.light
-      Fork is a copy of a project repository.
+      - else
+        %label.label-light
+          %span
+            No available namespaces to fork the project.
             %br
-      Forking a repository allows you to do changes without affecting the original project.
-- else
-  %h3 No available namespaces to fork the project
-  %p.slead
+            %small
               You must have permission to create a project in a namespace before forking.
 
-.save-project-loader.hide
+    .save-project-loader.hide
       .center
         %h2
           %i.fa.fa-spinner.fa-spin