added list of open user registrations
fix
added site info to elements
fix
added host_site support to webfrontend
Added a Reason to Registering-Field to the register-formular
tutorial fixed
tutorials fixed
added account flag categories in backend
tutorial fixed
splitted fixed flag list into categories
account list sorting and categories now work for checkbox list
fixed http-only links. they now refer to https iff the user accessed the webfrontend via https. Ignored external links where there is no https available.
added custom template field to hostelement and element on backend
fixes, migration
added support for the custom template flag in the editor. Disabled changing of the template for prepared and running elements.
Fixed Hiddenbox-margin.
Merge pull request #345 from swuest/tutorial_fixes

Tutorial fixes
Merge pull request #344 from swuest/hoverstylefixes

Fixed Hiddenbox-margin.
Merge pull request #340 from swuest/Reason_to_registering

Added a Reason to Registering-Field to the register-formular