Add missing imports in linkedToMap

fixes #1518
RegForm: Fixed error feedback on session choice
Removed forgotten fossil
Renamed doc/api to doc/dev

Moved http api docs to dev part
Added URL generator for HTTP API
Fixed Sharepoint documentation issues
Post-WIP fixes
Added requirements file for docs
Added jQuery, since readthedocs doesn't provide it
Added libs needed to build indico
[MIN] New wording for webcast request
Made custom filter optional for LDAP
Added fallback empty string
Better handling of non-existing user situation
[FIX] Save lang when changing from popup
[IMP] Added extra info and style to Weeks
Fix typo
Specified missing exception
Generate setup.py depenedencies from requirements.txt
[FIX] Compass: user-select mixin not imported