Fix bug 1095063: Remove raven (sentry).
Merge pull request #2519 from pmclanahan/remove-sentry

Fix bug 1095063: Remove raven (sentry).
[bug 1100861] Temporarily disable firefox desktop intro anim on Firefox 35 OSX
Merge pull request #2513 from alexgibson/disable-desktop-anim-fx-mac

[bug 1100861] Temporarily disable firefox desktop intro anim on Firefox 35 (OSX)