Make sure empty option has value=""
Updated setObservatory to set observation observatory_id, and clear observatory info if changing observatories
Added CollectionSelectBoxTest, bind polyfill for phantomjs
Refactored ajax methods into ajax/parse method for easier testing
Added ObservationMetaViewTest class
Merge pull request #58 from jmfee-usgs/GMP-302-tests

Gmp 302 tests