fix a few text weights and moved ugly mixins to mixin file and implemented in shame file

lms/static/sass/_shame.scss

@@ -98,3 +98,16 @@
     }
   }
 }
+
+//--------------------------------------
+//   The Following is to enable themes to
+//   display H1s on login and register pages
+//--------------------------------------
+.view-login .introduction header h1,
+.view-register .introduction header h1 {
+  @include login_register_h1_style;
+}
+
+footer .references {
+  @include footer_references_style;
+}

lms/static/sass/base/_mixins.scss

@@ -42,3 +42,11 @@
   overflow: hidden;
   display: block;
 }
+
+
+//-----------------
+//  Theme Mixin Styles
+//-----------------
+@mixin login_register_h1_style {}
+
+@mixin footer_references_style {}

lms/static/sass/base/_variables.scss

@@ -133,15 +133,3 @@ $login-banner-image: 'transparent url("../images/bg-banner-login.png") 0 0 no-re
 $register-banner-image: 'transparent url("../images/bg-banner-register.png") 0 0 no-repeat';
 
 $video-thumb-url: '../images/courses/video-thumb.jpg';
-
-//-----------------
-//  Mixin Styles
-//
-//  THIS MIGHT BE A GOOD WAY TO DEAL WITH LARGE CHUNKS OF SASS THAT WE WANT TO ALLOW THEMING ON...
-//  WE MAY WANT TO SEPERATE THEM OUT INTO ITS OWN "MIXINS" SCSS FILE
-//-----------------
-@mixin login_register_h1_style {}
-
-@mixin footer_references_style {
-    margin: -10px 0 0 0;
-}

lms/static/sass/multicourse/_account.scss

@@ -20,7 +20,7 @@
   .heading-2 {
     font-size: 25px;
     margin: 0 0 $baseline 0;
-    font-weight: bold;
+    font-weight: 300;
     text-transform: uppercase;
     color: $link-color;
   }
@@ -143,7 +143,7 @@
 
     &:link, &:visited, &:hover, &:active {
       color: $link-color;
-      font-weight: bold;
+      font-weight: 400;
       text-decoration: none !important;
       font-family: $sans-serif;
     }
@@ -494,10 +494,6 @@
       height: 120px;
       border-bottom: 1px solid $m-gray;
       background: $login-banner-image;
-      
-      h1 {
-        @include login_register_h1_style;
-      }
     }
   }
 }
@@ -512,10 +508,6 @@
       height: 120px;
       border-bottom: 1px solid $m-gray;
       background: transparent url("../images/bg-banner-register.png") 0 0 no-repeat;
-      
-      h1 {
-        @include login_register_h1_style;
-      }
     }
   }
 }

lms/static/sass/shared/_footer.scss

@@ -82,7 +82,7 @@
 
     // references
     .references {
-      @include footer_references_style;
+      margin: -10px 0 0 0;
       width: flex-grid(4,12);
       float: right;