Add aliases for mega Lati@s

All other megas had aliases except for Lati@s
Merge pull request #698 from Relados/patch-17

Add aliases for mega Lati@s
Add Node.js to /opensource
Fix Flame/Toxic Orb immunities' ignoring Gastro Acid
Fix messages for activation of Toxic/Flame Orb
Relocate custom messages to statuses.js
Merge pull request #699 from Slayer95/master

Fix messages for activation of Toxic/Flame Orb
Fix previous commit
Add start messages for Aura abilities
Add BH mentoring to /om
Merge pull request #702 from TalkTakesTime/patch-2

Add start messages for Aura abilities
Merge pull request #701 from TalkTakesTime/patch-3

Add BH mentoring to /om
Improvements to the advertising filter.
Merge remote-tracking branch 'upstream/master'