Fix selected file sets in File Manager dialog when using ConcreteAssetLibraryHelper
Escape sitename on install HackerOne Report 24062
Accidentally escaped twice, oops
And the last double fix for the night....
Adding more escaping! (after I broke it)
re-wrote this to be a little neater
Merge pull request #1836 from ojalehto/fix/selected-file-sets-while-selecting-files

Single file set doesn't get selected in File Manager dialog
Merge pull request #1848 from Mnkras/hackerone-24062

Escape sitename on install HackerOne Report 24062