add buttons to mark an evidence report as a real alert or a real beningn (withelist)

save to DB:

• report id
• real category (0 or 1)

will be used to

• hide whitelisted subjects for a given detector
• recompute WOWA parameters (see issue #9 )

mentioned in issue #9

changed the description

mentioned in commit 61ab2130

feedback mechanism is implemented, but not the whitelisting system ...

Fields of the feedback object: https://gitlab.cylab.be/cylab/mark-web/-/blob/master/database/migrations/2020_11_22_080148_create_feedback_table.php#L16

In Feedback.php, the report() method allows to get the original evidence report: https://gitlab.cylab.be/cylab/mark-web/-/blob/master/app/Feedback.php

... which allows to fetch original values: label of the detector, score etc. https://gitlab.cylab.be/cylab/mark-php-client/-/blob/master/src/Evidence.php

unassigned @tibo