Merge branch 'lh/menu'

* lh/menu:
  Add ofs argument to cgit_log_link and use it in ui-log.c
  Add trim_end() and use it to remove trailing slashes from repo paths
  Do not include current path in the "tree" menu link
  Add setting to enable/disable extra links on index page
  Change S/L/T to summary/log/tree
  Change "files" to "tree"
  Include querystring as part of cached filename for repo summary page
  Add more menuitems on repo pages