Resolving Changeset already inflight error when editing with 2 layers w/in map

[jackgrossman18]

ref #1425

[jackgrossman18]

@maxgrossman please take a look at the most recent changes

[jackgrossman18]

@maxgrossman please take a look at the new changes

[maxgrossman]

The changeset upload logic is :man_cook: :kiss: - made changes to both the secondary and reference datasets, then checked their respective changesets/nodes tables. they had the right changes. Awesome job.

In addition to those comments, I found these bugs.

sometimes I can't double click off when finishing drawing a way.

I cannot drag nodes that belong to features within the currently active layer

If you notice in the first gif how the icon changes. I think that indicates the mode is changing. For debugging why this is happening, it might be helpful to look at the context's exit and enter methods since they tell you when the modes are being switched.

[jackgrossman18]

@maxgrossman @brianhatchl this is ready for review