Usability Surveys (Improvements.UsabilitySurvey) - XWiki

[Proposal][UX][Usability] Usability Surveys: http://xwiki.markmail.org/thread/jsd27cbzdpg4qre2

Surveys
- General
  - Proposal 2
  - Proposal 1
- Specific
  - UsabilitySurveyPage

16.7.0