Add CsQuery
Added WYSIWYG editor to webinterface

* adjustet backend to convert between tomboy xml format and html
  * parameter ?notes_as_html=true can be used when getting/putting notes
    from the service to indicate HTML format; server will do the conversion
* included (bootstrap-)wysihtml5 with basic controls
Fix wysiwig note updating note content
Use correct latest sync revision instead of 0
Add font size changing to wysiwyg + html conversion
Fix bug
[WebClient] Various improvements

* Make the title of a note editable
* Add strikethrough conversion to backend and enable in wysiwyg
[WebClient] consider new title for note sync
[Backend] Make seperate DbEncryptedStorage backend class

* allows easier configurability whether of not to use encryption
Add basic doxyfile for reference doc generation
[Backend] Implement reencryption of all notes with new key

* Required ie. if a user changes his password
* also did some refactoring in the tests
[Backend] Some housekeeping
[WebClient] Heavy rewrite of wysiwyg

* Use own, custom angularJS directive <wysiwyg>