Uninstall feature

Well, I did what is rarely done, which is change the location of my modules directory and files directory and Demonstration site did not like it... I disabled the module before moving the files, then re-enabled the module (which sometimes helps) but after moving it, I checked the status of DS and it didn't like the new "files" path. I tried to change it to the new location but it would not save.

So, I figured whatever, i'll start DS over from scratch. (only had 1 base snapshot to worry about) I disabled the module then went to uninstall it and found that there is no way to uninstall it! I finally ended up opening up php admin and did a search for "demo_" then deleted the 4 rows found in the "variable" table. This let me re-enable the module from a 'new install' standpoint and it picked up the new files directory on its own :)

Anywho, just requesting to A) fix the 'file directory doesn't exist' if the files path is moved (not a big deal) and B) create an "Uninstall" option to clear the tables of the DS database entries for a "I screwed up and need to start over" scenario.