Merge branch 'bl/gitweb-project-filter'

Merge branch 'bl/gitweb-project-filter'

* bl/gitweb-project-filter:
  gitweb: Make project search respect project_filter
  gitweb: improve usability of projects search form
  gitweb: place links to parent directories in page header
  gitweb: show active project_filter in project_list page header
  gitweb: limit links to alternate forms of project_list to active project_filter
  gitweb: add project_filter to limit project list to a subdirectory
  gitweb: prepare git_get_projects_list for use outside 'forks'.
  gitweb: move hard coded .git suffix out of git_get_projects_list