add header item bug fix
Merge pull request #1082 from KorvinSzanto/master

Adjust image facade to detect imagemagick version.
content tweaks
Fix http://www.concrete5.org/developers/bugs/5-7-0/unable-to-edit-share-this-page-block/
Fix incorrect nofication that a page was submitted to workflow on page approval.
Fix http://www.concrete5.org/developers/bugs/5-7-0/public-profiles-are-404/
Fixing file delete bugs, inability to save description and tags
Merge branch 'master' of https://github.com/KorvinSzanto/concrete5-5.7.0
Fix #1078
make the Axmls parser type case insensitive
Merge branch 'fix-axmlns-parser' of https://github.com/goutnet/concrete5-5.7.0 into goutnet-fix-axmlns-parser
Convert config renderer to single quotes rather than double to prevent accidental variable injection