Fixing page size print CSS (rebase commit).

AUTHORS

@@ -208,3 +208,4 @@ Sri Harsha Pamu <kmitharsha@gmail.com>
 Cris Ewing <cris@crisewing.com>
 Carlos de La Guardia <carlos@jazkarta.com>
 Amir Qayyum Khan <amir.qayyum@arbisoft.com>
+Jolyon Bloomfield <jolyon@mit.edu>

lms/static/sass/base/_reset.scss

@@ -93,7 +93,7 @@ td { vertical-align: top; }
   thead { display: table-header-group; }
   tr, img { page-break-inside: avoid; }
   img { max-width: 100% !important; }
-  @page { margin: 0.5cm; }
+  @page { margin: 1cm 1.2cm 2cm; }
   p, h2, h3 { orphans: 3; widows: 3; }
   h2, h3 { page-break-after: avoid; }
 }