Fix: Re-enable ClickOnce deployment at Mozilla Firefox

Fix: Re-enable ClickOnce deployment at Mozilla Firefoxhttps://www.dotnetzone.gr:443/cs/blogs/birbilis/archive/2014/04/20/fix-re-enable-clickonce-deployment-at-mozilla-firefox.aspxWhen you try to run a ClickOnce Windows application from Mozilla Firefox, on some machines you may see it try to save a .application (ClickOnce deployment manifest) instead of running the ClickOnce application installer/updater/launcher. To fix that issueelCommunityServer 2.1 SP3 (Build: 20423.1)