fix non-microsite SUBDOMAIN_BRANDING defaults
Fix strings to avoid dangling commas
Added nimisha to AUTHORS file.
Merge pull request #2725 from edx/nimisha/studio-edit-tabs

Added nimisha to AUTHORS file.
Merge pull request #2574 from edx-solutions/splash-url-exclusion

splash-url-exclusion: Exclude '/heartbeat' from redirect
Merge pull request #2534 from edx/jbau/fix-non-microsite-subdomain-branding-default

fix non-microsite SUBDOMAIN_BRANDING defaults
update course info module to save content in new 'items' field + update import/export to handle content field other than 'data' or 'metadata'
STUD-154
Fix typo in video_module.
assign default forum role 'Student' to user on course recreate with same name STUD-1140
STUD-1140
Merge pull request #2726 from edx/alex/fix_typo

Fix typo in video_module.
Empty course temp folder after exporting course (export_handler)
STUD-1294
Added validation for username and email max length.
LMS-1479
Merge pull request #2364 from edx/zub/bugfix/std1140-seedforumpermissions

assign default role 'Student' to user on recreating course
Merge pull request #2688 from edx/zub/bugfix/std1294-importexportcruft

Empty course temp folder after exporting course (export_handler)
Allow /static in transcript names.
Merge pull request #2671 from edx/waheed/lms1479-front-end-validation-for-username-email

Added validation for username and email max length.
Add UI for editing forum third-level content
Merge pull request #2728 from edx/alex/allow_static_in_transcript_names

Allow /static in transcript names.
auto_auth: add ability to configure forum roles and scrape user id.
Add acceptance tests for forums comment deletion.

JIRA: FOR-472