live update not working on add to set element
Better check if the page is in dashboard
Fix incorrect object to check
avoid get image call in case there's no background picture
Made file helper functions return the PHP function call results.
Updated comments.
Merge pull request #1830 from ahukkanen/file_helper_tweak

File helper tweak
https://hackerone.com/reports/5831
Ignore master collections from sitemap.xml
Merge pull request #1831 from hissy/sitemap-job

Ignore master collections from sitemap.xml
Merge pull request #1819 from hissy/elements-addtosets

Fix $.liveUpdate not working on add to set element
https://hackerone.com/reports/23921
Merge pull request #1835 from Mnkras/single_user_hash

https://hackerone.com/reports/23921
updating version
https://hackerone.com/reports/25266
https://hackerone.com/reports/25266
Remove undefined and redundant variable
Merge pull request #1837 from ojalehto/refactor/remove-undefined-and-redundant-variable

Remove undefined and redundant variable
Handle null numeric types
Fix tinymce tabs