Allow users to select licenses for their vectors

[nsreed]

As a content creator, I want viewers of my work to understand how they may or may not use my work, so that I can share links to the work publicly without fear of it being plagiarized.

• Select license on create
• Modify license
• Show license in view mode
• Show license in edit mode

[ultimape]

Tested this a bit on the current build.

Unable to change license after selected and vector is created.
Option to even do this is not easy to access. Maybe link to it should be seen from the (C) display window with a pencil icon (if you have permission to change it)
Notification of (C) status appears to be correctly visible on all relevant screens. Should it be on the vector card in the main window?
The position of the (C) is in a different space on the view/edit request screen than on the actual edit screen. Annoys me.

[ultimape]

Still hard to access change dialog.

The custom option seems to insert a "CC BY-ND" link for some reason. Not sure why. This is incorrect.

it raises a concern of wanting to add a custom link to a license here.