OO-3055: add basic support for relations in taxonomy level, fix a case of focusing in tree table, fix reverse wording in taxonomy overview...

OO-3055: remove library flag in taxonomy, move the info page to the document pool module, tabbed the overview of taxonomy level...

OO-3055: confirm delete type, update panels after identifier changed, fix rs in templates directory, reactivate full text search for others indexers...

OO-3055: add lost + found, refactor the notifications and full text search to link to the document pool in general

OO-2981: Do not show warning after successfull sending of email from participant list and from email course node

OO-3136. prevent select in with all the participants identity keys of a course or a group in the coaching tool as some as very large number of members (> 32768)

OO-2981: Do not show error message when email is sent correctly. Password reset if several users have the same email address.

OO-3055: add new e-Assessment node in Administration, add a new document pool module, refactor the administration of taxonomy to separate the document pool features from the taxonomy itself, add an administration panl for the question pool