BISERVER-7981 - 404 message for pentaho/mantle/messages/messages_supported_languages.properties

fixed 404 error for jquery.min.map
Merge pull request #163 from aliakseihaidukou/BISERVER-7981

BISERVER-7981 - 404 message for pentaho/mantle/messages/messages_support...
Merge pull request #168 from rfellows/AngularDirectives

PDI-11553 - Refactor the accordion-based layout
[PDI-11553] - Refactor the accordion-based layout
Adding CSS styling for angular-directives.
Changed the buildSummary method to onSave.
Added onCancel.