Zabbix

..F....... [ZBX-16730] fixed disappearance of successful modification message while saving the Dashboards

* commit '5754ee66297d3fa068feba9315f5bb92d06eb45a':
  .D........ [ZBX-16730] updated changelog
  ..F....... [ZBX-16730] fixed session messaging to be used only in html page type
  ..F....... [ZBX-16730] reverted commits 64250896a0d bd5b7f1d65f f7211af4195 f7211af4195
  ..F....... [ZBX-16730] fixed disappearance of successful modification message while saving the Dashboards
  ..F....... [ZBX-16730] prposed image-message fix
  ..F....... [ZBX-16730] fixed disappearance of successful modification message while saving the Dashboards

(cherry picked from commit bf27f16fe32371d4aed16f24420223b56117e2e3)

 Conflicts:
	frontends/php/js/dashboard.grid.js