version/scylla 2.1.0

SCYLLA TWO POINT ONE POINT OH
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THE MERGINING IS UPON US. 
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* Fixes broken thumbnails when creating new pages/suites/compares
* fixes weird abcompare 'double-add' bug
* Updated to bootstrap 3.2, along with a bunch of UX/UI tweaks

All changes have been approved by @dustyjewett already, this branch was just for testing/premerging.