added growth stats for average number of active displays

trello card 
   https://trello.com/c/vZP09tVJ

additional fixes
- refactored shared code between active displays and new companies components
- jshint fixes
- cleaned up jshintrc
- removed test files from linting
- removed unnecessary karam plugins

could @ByronDarlison , @tejohnso @alexey-rise review at http://dashboard.risevision.com:8000/#/