Fix search with UTF8
Merge branch 'trunk' of https://github.com/voer-platform/vpw

# By Luong Trieu (2) and others
# Via quangthe2104 (2) and Luong Trieu (1)
* 'trunk' of https://github.com/voer-platform/vpw:
  Add ajax
  Change templates/frontend/ajax/browse.html
  Update Gunicorn configuration
  revert code
  add facebook comment