[spark] Add link on jobs page to open them with their result

Fix non ASCII char in a template
Fix for Impala test
Consolidate menu bar
[spark] Save and load a script
[spark] Save script in the editor

Parameters are not saved yet as they need to be re-designed.
[spark] Dynamic parameter list
[spark] Add download result data

Remove history tab for now
Move query name to top bar
Rename Jars to Applications