ZEPPELIN-148 run all paragraph

[ZEPPELIN-148](https://zeppelin-project.atlassian.net/browse/ZEPPELIN-148)
Button for run all paragraphs in notebook at once.

Here's how implemented

 - RIght of notebook's title, there were 'remove' button. now, 'Run'  button is added
 - 'Remove', 'Run' button is now only show when mouse hover notebook title.
 - 'Run' button only shows when no paragraph in notebook running / pending
 - 'Run' button actually invoke multiple paragraph run request from client-side. rather than server side runAll api invoke. for applying client's local update.


This is ready to merge