Some emotes and update AUTHORS

Emotes are based on FA templates. Features added for special expressions:
* Rain symbol from weather icons for crying
* Glass symbol remixed from fa-link icon for cool
* Eyebrows remixed from mouth of face-plain icon for angry
* Random icon modified for sick emoticon
* Microphone remixed for tongue in face-raspberry icon
* Times-circle modified for mouth in kiss symbol
* Modified nodes of mouth for mouth expressions