Fixed issues with not properly rendering played sounds/songs.
Add speaker emoji icons to sound playing and stopping.
Allow clicking play sounds to replay them.
Changed play class back to what it was, no reason to change it.
Maitain emojis
Merge pull request #353 from publichtml/maitain_emojis

Maitain emojis
Merge pull request #351 from alfajango/fixed-play-sound

Fixed play sound
Merge branch 'master' of github.com:kandanapp/kandan
Create ChannelActivities plugin (with empty contents)
Display channel list by simple <li>
Hide action-bar
Apply some styles
Set href property to anchor
Enable to switch channel by clicking channel list
Change channel color when new message has reached
Reset unread channel color when channel is shown
Display unread message counter
Change color when new mentioned message has reached

tmp
Change channel color when channel is active