Merge branch 'lh/layout'

* lh/layout:
  Make repository search case insensitive
  Remove 'patch' link from tab, add to commit view
  Implement minimal freetext search in the repolist
  More layout fixes
  Minor fixup in tree-view css
  Reintroduce the branch switcher
  Add fixed link to index page from repo header
  Include diff in commit view
  Replace sidebar/logo