moved scheduler2pdf libs into the libraries/ dir. deleted debugging output.
fixed file inclusion statement.
moved scheduler pdf libs to third_party directory.
implemented pdf export controller action. refs #2741
layout tweak: pushed school-switcher button further to the left to give some space to the "print as pdf" button. refs #2741
added entry for the "print as pdf" button label to language file. refs #2741
added "print as pdf" feature to dashboard/calendar views. refs #2741