Moved dashUpload, added icon attribute to tip directive
Moved dashboard controller to nav bar
Merge pull request #467 from rashidkpc/navbar-control

Moved dash controller to navbar. Settings for it to dashboard settings.
Clarify error message.

Elasticsearch will throw a 404 if there is no indexes added yet, resulting in
this unclear message -- even for people that are not using any sort of proxy.

This message update should make it easier to quickly troubleshoot why the
the dialogue is popping up.
Merge pull request #469 from stephendotexe/update-404-error-message

Clarify error message.