ExMixedFolders 2.07

[Sven]

- Deletion of unknown elements can now be applied to elements of ExMixedFolders or own elements in the unidirectional tasks.
- The SID for user objects is now used in the TaskBuilder to still recognize the corresponding task when renaming users in AD and thus avoid duplicate contacts.
BugFix: Excel import was incorrect.

[Sven]

BugFix: Proxy was not used for all webrequests