v0.2

Merge branch 'master' of https://github.com/InvoicePlane/Migrationtool

Conflicts:
	content/backup.php
	content/config.php
	content/conversion.php
	content/start.php
	engine.php
	engine/convert_db.php
	engine/save_backup.php
	engine/save_config.php
	index.php