Converted annotation lettuce test into bok-choy test.
TNL-353
add couse key verification decorator in common for use in both studio and lms
PLAT-88
Merge pull request #5404 from edx/waheed/tnl353-wrote-annotation-bok-choy-test

Converted annotation lettuce test into bok-choy test.
Merge pull request #5362 from edx/zub/bugfix/plat-88-importstatusinvalidkeyerror

add couse key verification decorator in common for use in both studio an...
Added default font to a  list of available fonts in text editor XModule
Added acceptance test scenario to test for existense of "Default" font and all tinyMCE built-in fonts
Updated AUTHORS