HUE-1966 [core] Integrate a font file with filetype icons

Added CSS and the HueFiletypes font
Changed icons on Beeswax for result download
HUE-1958 [pig] Do not take $ sign as a parameter in regexps
HUE-1968 [pig] Resubmission of a failed script seems to hang

Improved response time for the screen reset
Fixed properties icon
Spinner is hidden when the script is not running
HUE-1882 [core] Adding some missing file for OAuth support

Update last two Twitter API default ini values
HUE-1969 [beeswax] Beeswax polishing

Fixed errors when saving design by using setErrors.
Added isRunning states when fetching results and whilst saving results.
Dsiabled explain when a query is running.
HUE-1963 [sqoop] minor bug fixes

- It turns out that the window.location.back function seems to be somewhat async.
  Wait for hashchange to update connection.
- Add check for connection when cancelling.
HUE-1734 [oozie] Re-run workflow popup is HTML escaped

Bumping the max length of the name and the value of the parameters
HUE-1964 [jb] Hide see expired job checkbox

The kill button is already hidden everywhere for MR2