E-Learning mission complete

Add avatars pictures.
Add Character counters in outbox and e learning mission.
Add E-learning power.
Change the font-size Coins
Change "Bandeja de salida" / "Outbox"
Change "Marcador" / "Ranking"
New textArea sizes, Outbox text area 140 characters, e-learning mission
text area 200 characters
Merge remote-tracking branch 'origin/master'

Conflicts:
	css/main-style.css
	css/main-style.less