Stop form from locking bitmap when loading it

Signed-off-by: James Tasker <james_tasker1@hotmail.com>
Code cleanup

Signed-off-by: James Tasker <james_tasker1@hotmail.com>
Add save-config functionality to StorageManager

Signed-off-by: James Tasker <james_tasker1@hotmail.com>
Add load-config functionality to StorageManager

Signed-off-by: James Tasker <james_tasker1@hotmail.com>
Replace save/load-config functionality in form with StorageManager calls

Signed-off-by: James Tasker <james_tasker1@hotmail.com>