First preview release

This is not a release, this is a preview apk, so that everybody who is interessted can look into the app and can provide feedback via GitHub.

Things which should work:

• Create notebooks, notes, tags
• edit/delete notes
• Sync with different remote accounts (IMAP Server must be a Kolab server or must support ANNOTATEMORE IMAP extension)
• Local account

Attention: if you use tags in the app, the note will disappear on your Kolab account and remote tags are not synced at the moment. If you create a notebook in the app, you have to "active" it in the settings of your kolab server, so that it is displayed in the web note client.

Please have a look in the GitHub issues tab, if you want to know what features are planned or wished for future versions.

Usage at your own risk ;-)