[fix bug 963570] Update Firefox detection on bedrock for Mobile and Tablets
Fix bug 970389 - Update Serbian community email address in email_contribute.py

Changed the domain for sr locale.
Update MWC schedule. Bug 969102.

- Update map image.
Merge pull request #1672 from jpetto/bug-969102-mwc-schedule-updates

MWC schedule updates. Bug 969102.
Fix Bug 776967 - Font display issue with Fulah Unicode glyphs
Merge pull request #1677 from kyoshino/bug-776967-fulah-font

Fix Bug 776967 - Font display issue with Fulah Unicode glyphs
Merge pull request #1621 from alexgibson/update-bedrock-detection-firefox-tablets

[fix bug 963570] Update Firefox detection for Mobile and Tablets