[CLEANUP]  Checkstyle.
(cherry picked from commit 638a9b7)
[SP-981]  Cherry picking a change to SecurityHelper (commit c6116a3) which is required by PentahoXmlaServletTest.
[SP-981] Backport of [BISERVER-10816] - Analysis datasource accessible via XMLA even when EnableXmla=false

The check for whether EnableXmla was set to false had a fixed string comparison, which used a different case and quote expectation than what was coming through.
Modified to allow single, double, or no quotes, and case insensitive.
(cherry picked from commit fd6d562)
Merge pull request #1271 from mkambol/SP-981

[SP-981] Backport of [BISERVER-10816] - Analysis datasource accessible via XMLA even when EnableXmla=false