Add Ability to Repair Broken Riverscape Project Paths (or make relative) in

[joewheaton]

One of the cool features of QRAVE is that if you save a *.qgz project, it not only saves the layers, but also saves the loaded Riverscapes Projects into RAVE. This was an unexpected cool thing.

However, if your user an idiot (like I was where I picked up *.qgz and all the Riverscape Projects and moved them to a new location), you get some critical errors and we provide no way to fix these. It doesn't quite render the QGZ file useless, but it does make it annoying.

I explain problems below:

@MattReimer this is a low priority (we can prioritize with Milestones later) but thought I would log it now. Not sure if it is easy or complicated fix.

[joewheaton]

@MattReimer I know you're busy on lots of other things so please feel free to ignore this for now.