'copystatcopytree' in app.projects.helpers.workspace

[jeremydouglass]

Fixed a typo that mixed the names of copystat and copytree into one non-existent method.

Based on the signature I believe that copytree() was intended, and so that is the correction that I made -- but if copystat() needs to be used instead for some reason then I wanted to make a note of it here. If copytree is fine then we can close this.

************* Module app.projects.helpers.workspace
app/projects/helpers/workspace.py:211:8: E1101: Module 'shutil' has no 'copystatcopytree' member (no-member)