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: don't upgrade manager roles if administrator and decouple every role, remove double update roles method...

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-1616: reduce the number of double call to the repository entry with the manager and after with the course

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

FXOLAT-282: initial import of BPS virtual classroom course building block and skeleton of Vitero connector

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branch : FXOLAT-282-virtualclassroom