Persist static_tab name.

STUD-663.
Merge pull request #741 from edx/chirstina/static-tab-rc

Persist static_tab name.
Fix var name issue
Merge pull request #762 from edx/jkarni/hotfix/tempfile-varname

Fix var name issue
Merge branch 'master' into codecoalition
codecoalition: Only allow emails listed in remote DB to create account