highlight all sections except root section
Merge branch 'n/highlight-all' into next
magit-insert-wazzup-commits: cleanup
magit-insert-wazzup-commits: insert focused branch

Insert the focused branch in the list of branches and mark it with an
asterisk.
magit-insert-wazzup-commits: use overlays for branch labels
remove magit-insert-wazzup-head-line

The focused, or head, branch is now part of the buffer list and
explicitly marked as such.  So we no longer need an extra header
line.
Merge branch 'n/wazzup-1' into next
magit-branch-manager: remove kludge

`magit-mode-setup' now takes care of this.
magit-branch-manager-mode: doc-string cosmetics
magit-wash-branch-line: use magit-bind-match-strings
magit-bind-match-strings: add STRING argument
magit-insert: support inserting already propertized string
refactor the branch manager

This certainly has to be further improved, including but not limited
to how the information is presented.  But that can wait until later.
show list of tags in the branch manager
magit-branch-edit-description: new command
magit-insert-branch-description: new function
Merge branch 'n/branch-manager-1' into next