HUE-1887 [oozie] SLA dashboard polishing

Pass #1
SLA main page:
- add one more day in the end date
- sort list by nominal time
HUE-1892 [oozie] Permission denied for hive-site.xml for Hive action on workflow

Rename hive-site.xml example to hive-config.xml.
Add a note on the editor of Hive action.
Cleaner History page with direct link to dashboard from the editor.