The NodeEvaluation makes it difficult to use a course node in the
learning path access concept. So it is refactored to a minimum extent,
so that it can covering the previous functionality.
As a replacement a new security callback and a new tree node type is
introduced.

organization, implement segment view for user visit card to better
inline in user management, implements several features for all roles
(allow enrollment, mandatory confirmation email by enrollment, allow
autocomplete, bulk changes...), add roles like lecture manager, quality
manager..., enhance the roles editor in user management

OO-3296: implement migration tool from institution resource manager to learn resource manager based on organizations

OO-2790: add the options to upload assessment documents on a per course element / user base which behave like the user comment

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

OO-407: differentiate authors from coaches, support error codes from OpenMeetings and more polish overall

OO-407: forge URLs to retrieve the recordings, add guest access to the rooms, implements close/open room

OO-406: implements the skeleton for the OpenMeetings rooms, course building blocks, group tools, connection via SOAP to OpenMeetings...

FXOLAT-282: disable the validation for read-only meeting, vitero logo in title of course bb, set the locale of the user, wording

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branch : FXOLAT-282-virtualclassroom

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branch : FXOLAT-282-virtualclassroom

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branch : FXOLAT-282-virtualclassroom

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branch : FXOLAT-282-virtualclassroom

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branch : FXOLAT-282-virtualclassroom