HUE-1554 [core] Polishing glitches from new design

Pig: Shortened editor page, switched to jHueNotify completely and improved Hive down notifications
Changed tooltips on Oozie workflow editor
FB: changed style to view file and edit file pages, fixed chmod/chown dropdown button, added a bit of padding on the file list table
Introduce height media queries on Quick start wizard and user admin, if the browser height < 800 they are fixed at the bottom, otherwise under the form