Restyle project home

* more focus for description and stars/forks
* rename activity -> to project tab
* put activity under tab: prepare place for README tab

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

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Improve project sidebutton colors

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

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Merge branch 'project-home-redesign' into 'master'

Project home redesign

* more focus for description and stars/forks
* rename activity -> to project tab
* put activity under tab: prepare place for README tab

Fixes #1534.

See merge request !1047