Pinboard phase 1

**READY FOR MERGE**
This is phase-1 of the pinboard.  it's functional but has a few small missing things.  (see below)

In this phase
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* pin jobs with shift-click or on detail panel
* batch classify jobs
* batch associate bugs
* notes and bugs are listed on the ``annotations`` tab.
* bug suggestions have a ``+`` instead of a check because they're added to the pinboard for association in batch.
* 2-part save.  you can save classifications and bugs together, or one or the other.
* ``stars`` and ``notes`` wording changed to ``classification``
* refactored several parts of the detail panel
* new coloring

For phase 2
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See tasks for phase 2 in this story: https://www.pivotaltracker.com/story/show/67427378