In order quickly find the proper repository to open As a developer with a lot of projects (external consultant for mulitple companies) I would like to arrange the various repositories in to Folders.   In the overview screen over Sourcetree we see a list of repositories. For me it would be useful if there was the ability to create Folders in that list and add repositories to a Folder. Folders should be able to be opened and collapsed in order se or hide all repositories in that folder.   Features:  * Add a folder  * Add a repository to a folder  * Open a folder  * Close a folder  * Delete a folder  * Move a repository between folders.