Add config map to note, to save some configurations
Ability to change look n feel
Merge branch 'master' into looknfeel

Conflicts:
	zeppelin-web/app/scripts/controllers/paragraph.js
Handle looknfeel change
Two working themes
Basic key, value selection by drag and drop
Looknfeel selector as bootstrap dropdown button
Merge pull request #144 from NFLabs/looknfeel

Look n feel
implement pivot function
Ability to change aggregation function per value
Multiple same value with different aggregations.
Add avg aggregation.
Integration with NFLabs slack was added
Take care of piechart
Beautifulize graph option
Fix value data reading
Remove some jshint warnings
Merge branch 'master' into pivot

Conflicts:
	zeppelin-web/app/scripts/controllers/notebook.js
Merge pull request #159 from NFLabs/pivot

Pivot
Merge pull request #160 from bzz/feature/encrypted-slack-integration

CI: Travis integration with Slack
Increase shell execution timeout