Refactor projects list

1. Fix double bottom border if pagination
2. Fix broken search on forks page
4. Remove duplicate js logic
4. Remove unused show all link
5. Remove duplicate “no project” message in different views

After this merge request you can easily render shared projects template
with all necessary html/js included to make searchable list with
pagination. All you need to provide is controller that returns
projects list with seach nad pagination and render html form with
project-filter-form id and text field with filter_projects name.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

cc @jschatz1 @DouweM 

See merge request !3075