default run_ci to true in the form

For those of you not following along 'run_ci' means start builds on
pushes to the master branch (which Kochiku receives notice of via web
hooks).
Style changes to repository form

* increase the width of the label area
* make the checkbox rows just as tall as the text fields (28px)
Remove 'use_branches_on_green' feature.

This was originally added to allow developers to choose between updating
a tag or updating a branch with the latest green ref on the master
branch. In retrospect, using tags for this is terrible since they are
not ment to be updated.
Remove support for append_type_to_queue option

The fact that we needed this option in the first place was a sign we
were doing it wrong. None of our projects rely on this anymore so it can
be removed.
Merge remote-tracking branch 'public/rob/remove-append-type-to-queue'
Merge branch 'rob/remove-tagging'