- Fix certification card in user's profile page

Since design review, certification card were not displaying well.
This commit applies the course card template on certification card
and modifies the way the certification get downloaded by calling directly the
controller instead of using class catched in javascript that calls afterward the
controller.

- Allow review button only if allow_comment in FS mode + redirect url

'write a review' button in fullscreen mode must not be displayed if the course
is not in allow_comment mode. Also, the url if this button was redirecting
to slide view in non fullscreen mode. As no review can be done from this point,
the url redirect now to the course view.

- Fix fullscreen slide height.

- Fix all slides view per category pager and page rendering

Since the introduction of categorized data dictionnary that is given to the template,
if a category is empty, it's rendered anyway, which is good for publisher,
to quickly see all existing categories.
But other users should not see those empty categories.

Also, if the slides from a course are filtered (with View all button) by category,
all the slides should be reachable, using the pager. This was not the case as
categorized slides dictionnary returned no slides if page <= 2.
(as bound of array was from offset to limit and offset and limit were equals)
The number of slides per category must be overwritten if search category is activated,
to see more than the 4 first slides of the category.

Finally, if search category is activated, only the target category should be displayed,
and not the others, for performance reason.

- Show 'not verified' next to user's name if user karma = 0

Instead of using the email_validation_done flag. As email validation is only used
to offer the user some karma in order to be able to interact in the forum or eLearning.
If the user already has karma, he is already considered as active and 'verified'

- Correct URL of certification in FS mode

Task ID : 1941250
Closes PR #31567

Signed-off-by: Thibault Delavallee (tde) <tde@openerp.com>