Enable Specific Backup Settings (select mindmaps to backup) #125
Description
if we limit a user to backup x mindmaps, it would be nice if the user could choose which mindmaps to backup. i think it would be nice if the user could choose in the workspace with a right-click whether to backup a mind-map or not. and the trash mind-map should not be backuped by default
in addition, what if a user has backuped e.g. 10 mindmaps and the limit is 10 mind maps and now the user creates and saves the 11th mind-map? of course, an error message should occur that suggest to upgrade. but if the user does not want to upgrade? should the 1st mindmap be deleted and the 11th be saved? or only the first ten saved mind-maps are kept online and the 11th is ignored?
in addition, if a user chooses to not backup a mind-map that has previously been backuped, the change in the settings need also be transferred to the server, i.e. the mind-map needs to be deleted on the server (or the mind-maps need to be flagged as non-backuped)