Add basic classes outlining backup process.
Need implementation of UI
Setup UI implementation of Backup creation
Add buffers to (hopefully) faster performance
Add basic classes outlining restore process.
Need implementation of UI
Attaching everything to the UI level
Prompt users to backup before upgrading
Merge pull request #31 from Doplgangr/ZipBackup
Add dialogs to places where long processes involving vault I/O would occur.
Edit change passphrase dialog to new design