Merge pull request #164 from bytekast/master

Handle default title/description property keys
BISERVER-8592 - Added system roles delete block
Merge branch 'master' of https://github.com/pentaho/pentaho-platform into BISERVER-8592
Merge pull request #165 from webdetails/BISERVER-8592

BISERVER-8592 - Added system roles delete block
[BISERVER-8530] Use "default" locale if provided locale is null