PAN-107 adding asu_userpicker and preq modules to openasu makefile

Added the ASU Userpicker to Github, and now including it in openasu.make along with the prerequisite modules it depends on.

Not including results of running the makefile with this commit/pull request since makes are failing due to errors:
Unable to download bootstrap from https://github.com/kalamuna/asu_bootlibrary/archive/v2.3.0.zip.
Unable to download modernizr from https://github.com/Modernizr/Modernizr/archive/v2.6.2.zip.

ASU Userpicker portions of the make are functioning as desired.