fix 500 when user submits an answer too early

this happens if for some reason user submits an answer when quiz hasn't yet started for the first time.
minor JSHint changes.
Attempt to fix challenge IntegrityError.

Seemed to happen when a challenge is created very quickly twice in a row. (Either user double clicks enter button or two people create it at the same time?)
turn off mixpanel/ga/etc locally.
attr -> prop
fix profile behavior for default lex
fix bad bug where dc is not defined!
minor changes/bug fixes
listening for config changes on alphagram view
Render lex symbol in answers.
Render solutions vertically.
edit admin to allow entering of alphagrams
allow more than 50 questions per round.
Allow creating challenges in the future from file.
smallen jquery ui theme a bit. update copyright.
tweaks
Bug fix for configuration window. 

Shouldn't use the same class (questionList) probably.
Remove stars css
get rid of extraneous code/comments