Auto channel features.

* Removed channel list definition from the base element
* Added a new ceci-channels to hold all the channel info and colors
* When you run out of open channels, it cycles through the alphabet again
* extended ceci-channels from ceci-channel-map instead of relying on an external element
removed another ceci-channels querySelector
reset spacing on lines in ceci-element-base
Merge pull request #1667 from secretrobotron/autochannels

Autochannels - Boo-ya