This adds a database migration that creates routes for any projects and
namespaces that don't already have one. We also remove the runtime code
for dynamically creating routes, as this is no longer necessary.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Reuse same search form and behavior for dashboard#projects, group#projects
and admin#projects. Repsect all other options like sorting, personal
filter when search projects by name. Create FilterableList JS class to
handle identical behaviour of projects and groups lists.

This change also makes filtering and sorting availabe on explore#projects
and explore#groups no matter if you are logged in or not.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Previously the search form just wasn't including any params that had previously been set, so when you filtered by name, it would reset all the params & therefore ignoring the archived param

Closes #28007

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/24036

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This adds counters for build artifacts and LFS objects, and moves
the preexisting repository_size and commit_count from the projects
table into a new project_statistics table.

The counters are displayed in the administration area for projects
and groups, and also available through the API for admins (on */all)
and normal users (on */owned)

The statistics are updated through ProjectCacheWorker, which can now
do more granular updates with the new :statistics argument.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>