Run login page through HTML::Mason::PlackHandler

Successfully got login page served through Plack. Very simple handler
setup in app.psgi
Change length() to scalar() in TUSK::Functions
Add styles, scripts, graphics, icons

Statically serve with Plack::App::File.

Reduces Apache configuration at expense of running statically served
content through Plack. I believe Apache can still be setup to preempt
this behavior but running everything throug Plack is convenient for
development use.