Add a direct access from activity calendar and form views to the linked model instance.
Bedore this change, it was not possible to access to the model instance linked to an activity from the calendar view nor from the view opened by clicling on the activity into the calendar
[IMP] mail_activiy_board: Restrict related_model_instance selection to models supporting mail acitvities
Co-Authored-By: Miquel Raïch <miquel.raich@eficent.com>
* [ADD] Module that insert activities board.
* [FIX] Author error in __manifest__ file and style changes.
* [FIX] Fix replace in view, rename files and style changes.
* [FIX] Enumerated list ends without a blank line; unexpected unindent.
* [FIX] Name fail.
* [FIX] Bug in view.
* [FIX] Add button Activities in mail.thread and readme folder. Others improvements in style of code.
* [FIX] Type 'tree' not found in registry: problem solved.
* [FIX] Dependence change: 'mail' for 'calendar'.
* [FIX] Eliminated unnecessary imports.
* [FIX] Bugs about js and if/else.
* [FIX] Improvements following guide lines and eliminating unnecessary attributes in views.
* [ADD] Added counter in the 'Activities List' button.
* [FIX] Bugs in javascript with 'Activities' button.
* [ADD] Tests folder.
* [FIX] Deleted references to modules not installed.
* [FIX] Formatting javascript.
* [FIX] Bug: added a soft line before a class.
* [FIX] Bug: https://github.com/OCA/social/pull/283#discussion_r204302325
* [FIX] Escaping 'lt' in xml file. Bug: https://github.com/OCA/social/pull/283#discussion_r204302325
* [FIX] The meeting attendees are shown in kanban mode on the meeting board.
* [FIX] Hide in form view of the activity board the assistant field if the activity is not a meeting type or if there are no assistants.
* [FIX] Change to default kanban view for partners.
