LTSINSCRIP-138 - Roundtrippable migration for Subject Areas to scope them by library.

Should be roundtrippable as long as there's not deliberate bad data creation between up and down.
LTSINSCRIP-138 - Most of the view stuff done, forms still need to change
LTSINSCRIP-138 - Forms updated for subject areas.
LTSINSCRIP-145 - Starting the process of fixing call numbers
LTSINSCRIP-146, LTSINSCRIP-147 - Migration and model change. Dropped table floors_subject_areas
LTSINSCRIP-148, LTSINSCRIP-149 - Theoretically, call numbers and subject areas are both nested and working. More testing needed.
Cleanup of SQL and comments based on feedback from Bobbi. Thanks Bobbi!
LTSINSCRIP-138 - Minor fix for call number stuff controller, LTSINSCRIP-9 - some flash->flash.now changes
LTSINSCRIP-153 - BulletinBoard-related routes and views pruned, erroneous string assignment in import fixed, but don't trust the import function.
Minor fix for floors - reduce code duplication, make only call numbers for relevant library available on floor creation.
Cleanup.  Mostly making sure <li>s are wrapped by <ul>s, and removing detritus status view.
WIP fixing tests that broke across users_mtm and route changes
LTSINSCRIP-155 - Test fixes, and a few fixes discovered in process.
LTSINSCRIP-124, LTSINSCRIP-150 WIP
LTSINSCRIP-124 - Line format for non-admins reservations
Temporarily using custom paranoia because of issue https://github.com/radar/paranoia/pull/118
One-char README update.
LTS-165 - Foreigner, and a number of fixes and additional paranoid models required by same.

The reason for inspiring fear in the additional models, in addition to the benefits of soft delete, is that it turns out that
anything north of a paranoid model in the hierarchy of models that has :dependent => :destroy over that paranoid model
 ALSO needs to be paranoid, or else unpleasantness arises when you try to delete something higher up the chain, and its
dependents soft-delete, and the foreign key constraint prevents soft-deletion and rolls the whole thing back.
Added details of paranoia-related model hierarchy constraints to DEV_NOTES.md
LTSINSCRIP-160 - Established MtM relationship between users and libraries for permissions.  Also includes libraries association, which represents which libraries the User has UserTypes for.