getRootFolderPath() Should be Synchronous

[chrstinalin]

Currently, getRootFolderPath() is an asynchronous function as it prompts the user to input a root folder if non exists. However, the async modifier is bubbling up in a way that's causing/can cause implementation headaches.

Instead, there should be a synchronous getRootFolderPath() and separate asynchronous action for the check to be called 1) on launch, and 2) on change of the root folder setting.