Change document type did unnecessary checks on root node which resulted in YSOD
Tests - stop deleting dummy.txt files
U4-2807 - better exception message on bogus domain
Fixed U4-608 Empty tinymce config throws null ref exception
Fixed U4-576 Umb 4.7.x - Dashboards
Fixes U4-489 Installer, link to folder permission video broken
Fixes U4-502 TextString/TextBox multiple don't accept polish Ś character