Exporting all data in un-encrypted format

Let's say a user would like to have a full backup, that would contains all data in a "readable" format.
Currently you can only download each note one by one.

There should be an option to export all notes in a readable format from the export page:

• it should require re-entering user password (in case you are not near your PC and someone wants to quickly steal all your notes)
• it should export simple ".zip" file with all text notes
• the zip should also contain a "full backup" file so that user could use it to re-import just like the normal exported file

Implementation:

1. basically iterate all notes and export each one into text format
2. create full encrypted backup
3. create zip file and place there all note files plus the full encrypted backup file