Shiro plugin, generated files added

Signed-off-by: Joseph <josel@pdx.edu>
Default admin user bootstrapped

UI header now has account tab for logging in, and admin role function,
which is just linking to the Admin Page and logging out.
Wrapped Admin Controller with a check for "admin" privileges before
rendering admin page, or respond with "403 Forbidden" error.

Signed-off-by: Joseph <josel@pdx.edu>
Merge branch 'shiro'