Attempt to set X-Frame-Options: SAMEORIGIN on every response
[NEXUS-6241] Support Request feature
NEXUS-6564: no need to re-check access when internally retrieving OBR metadata (if request originates from the outside then access has already been checked, if request is coming from an internal event then it is already trusted)
Merge remote-tracking branch 'origin/master' into NEXUS-6569-add-x-frame-options
NEXUS-6569: Fixing ITs use of equal method

Using Matchers.equalTo for that
NEXUS-6569: CommonHeadersFilter applies std headers before passing on

To ensure that headers are always added. See issue comments
(Stuart's and Chris' comments)
NEXUS-6569: Typo in UT
[NEXUS-6582][NEXUS-6583] Yum generate metadata task Single RPM per directory / Force Full Scan options
[NEXUS-6569] Add X-Content-Options header
Update text, only show if authenticated w/perms and edition != OSS
Update icon
Add tooltip
Use strong insteead of quotes
[NEXUS-6592] Update to fontawesome 4.1.0
Merge pull request #526 from sonatype/NEXUS-6592-update-fontawesome

TRIVAL: [NEXUS-6592] Update to fontawesome 4.1.0
Merge branch 'master' into NEXUS-6241-support-request
[NEXUS-6241] update url
Merge pull request #523 from sonatype/NEXUS-6241-support-request

REVIEW: [NEXUS-6241] Support Request feature
Merge pull request #525 from sonatype/NEXUS-6569-add-x-frame-options

NEXUS-6569: Add X-Frame-Options standard header
NEXUS-6569: NEXUS-5023: Fixes for std headers

Moving the IE one from ContentServlet to standard ones,
removing/replacing the misnamed header