OO-1069: round of optimizations, escape the & character, async reload the list of courses, groups and shared folders...

OO-1016: better debugging of e-mails, don't send user info to factory for drop box subscription's context

OO-1068 OO-1067 flexi form refactoring towards bootstrap, implement default layouts, further simplify DOM

OO-937: english wording, fix issue with checklist where passed is calculated from the number of checkbox

OO-1049 grand admin/moderator rights also to co authors for open meeting course elements (patch from Stephan Clemenz)

OO-984: add media mapper for description, objectives, credits, requirements, refactor long to int conversion in quota, remove some used parameters for the rich text element

no-jira: backport fix for the escaping of already escaped characters by TinyMCE in enrollment course element