make git forget about the changes due to symlinking files

Git normally tracks the dummy files we replace with symlinks. So we tell it to ignore these changes on deploy.
git:changes expect changes to certain files

You can either ensure assume-unchanged or ensure those changes are tracked.
Used to keep the git status clean.
specify cwd when using git:changes
move git::changes into git module, whitespace fix
Merge branch 'feature/clean-webapp-deploy' into develop