Request for a dropdown of available "paths" in the Submit Job dialog

[kylemallory]

Currently the "Path" in the submit jobs dialog is an empty string. It would be nice if one or both of the following could be implemented:

1. Use the last entered path when submitting a new job.
2. Provide a drop-down list of available/recent paths, queried from Octoprint.

As is, its easy to submit a job with a slightly different spelling for a folder which I think exists, but doesn't. Ie "Test Prints" vs "Printer Tests" vs "test_prints", etc. If I'm not careful, I end up with a collection of redundant folders that I later have to cleanup and re-organize. 1st-world problems, but solvable ones, hopefully. :-)

Thank again for the plugin. It's awesome being able to submit and monitor directly from Cura!