Tweak behavior of registration button for marketing site

If a user is already registered for a course but the course has not started
yet, display a grey button that says "you are registered" and goes nowhere
instead of the blue "access courseware" button, which goes to the LMS course
about page (which 404s).

lms/static/sass/_shame.scss

@@ -79,14 +79,15 @@
 
   .action {
 
-    // not registered (default)
-    &.action-register {
+    // register or access courseware
+    &.action-register, &.access-courseware {
       @extend .btn-primary;
     }
 
-    // already registered
+    // already registered but course not started
     &.is-registered {
       @extend .btn-secondary;
+      pointer-events: none !important;
     }
 
     // coming soon

lms/templates/courseware/mktg_course_about.html

@@ -45,7 +45,11 @@
   <ul class="list-actions">
     <li class="item">
         %if user.is_authenticated() and registered:
-          <a class="action action-register is-registered" href="${course_target}">Access Courseware</strong></a>
+          %if show_courseware_link:
+            <a class="action access-courseware" href="${course_target}">Access Courseware</a>
+          %else:
+            <div class="action is-registered">You Are Registered</div>
+          %endif
         %else:
           <a class="action action-register register" href="#">Register for <strong>${course.number}</strong></a>
         %endif

lms/templates/mktg_iframe.html

@@ -28,7 +28,7 @@
   <!-- repeated button styles needed for IE (copied from _shame.scss) -->
   <style type="text/css" media="screen">
 
-    .view-partial-mktgregister{background:transparent}.view-partial-mktgregister .wrapper-view{overflow:hidden}.view-partial-mktgregister .btn,.view-partial-mktgregister .btn-primary,.view-partial-mktgregister .action.action-register,.view-partial-mktgregister .btn-secondary,.view-partial-mktgregister .btn-tertiary,.view-partial-mktgregister .action.isnot-open{display:block;padding:10px;text-transform:lowercase;color:#fff;letter-spacing:0.1rem;cursor:pointer;text-align:center;border:none !important;text-decoration:none;text-shadow:none;letter-spacing:0.1rem;font-size:17px;font-weight:300;box-shadow:0 !important}.view-partial-mktgregister .btn strong,.view-partial-mktgregister .btn-primary strong,.view-partial-mktgregister .action.action-register strong,.view-partial-mktgregister .btn-secondary strong,.view-partial-mktgregister .btn-tertiary strong,.view-partial-mktgregister .action.isnot-open strong{font-weight:400;text-transform:none}.view-partial-mktgregister .btn-primary,.view-partial-mktgregister .action.action-register{background-color:#4697ec;background-image:-webkit-gradient(linear, left top, left bottom, color-stop(5%, #4697ec),color-stop(95%, #4880bb));background-image:-webkit-linear-gradient(top, #4697ec 5%,#4880bb 95%);background-image:-moz-linear-gradient(top, #4697ec 5%,#4880bb 95%);background-image:-ms-linear-gradient(top, #4697ec 5%,#4880bb 95%);background-image:-o-linear-gradient(top, #4697ec 5%,#4880bb 95%);background-image:linear-gradient(top, #4697ec 5%,#4880bb 95%)}.view-partial-mktgregister .btn-secondary{background-color:#999;background-image:-webkit-gradient(linear, left top, left bottom, color-stop(5%, #999),color-stop(95%, #666));background-image:-webkit-linear-gradient(top, #999 5%,#666 95%);background-image:-moz-linear-gradient(top, #999 5%,#666 95%);background-image:-ms-linear-gradient(top, #999 5%,#666 95%);background-image:-o-linear-gradient(top, #999 5%,#666 95%);background-image:linear-gradient(top, #999 5%,#666 95%)}.view-partial-mktgregister .btn-tertiary,.view-partial-mktgregister .action.isnot-open{background:#e6f5fc;color:#5597dd}.view-partial-mktgregister .list-actions{list-style:none;margin:0;padding:0}.view-partial-mktgregister .list-actions .item{margin:0}.view-partial-mktgregister .action.isnot-open{pointer-events:none !important;outline:none}
+    .view-partial-mktgregister{background:transparent}.view-partial-mktgregister .wrapper-view{overflow:hidden}.view-partial-mktgregister .btn,.view-partial-mktgregister .btn-primary,.view-partial-mktgregister .action.action-register,.view-partial-mktgregister .action.access-courseware,.view-partial-mktgregister .btn-secondary,.view-partial-mktgregister .action.is-registered,.view-partial-mktgregister .btn-tertiary,.view-partial-mktgregister .action.isnot-open{-webkit-box-sizing:"border-box";-moz-box-sizing:"border-box";box-sizing:"border-box";display:block;padding:10px;text-transform:lowercase;color:#fff;letter-spacing:0.1rem;cursor:pointer;text-align:center;border:none !important;text-decoration:none;text-shadow:none;letter-spacing:0.1rem;font-size:17px;font-weight:300;box-shadow:0 !important}.view-partial-mktgregister .btn strong,.view-partial-mktgregister .btn-primary strong,.view-partial-mktgregister .action.action-register strong,.view-partial-mktgregister .action.access-courseware strong,.view-partial-mktgregister .btn-secondary strong,.view-partial-mktgregister .action.is-registered strong,.view-partial-mktgregister .btn-tertiary strong,.view-partial-mktgregister .action.isnot-open strong{font-weight:400;text-transform:none}.view-partial-mktgregister .btn-primary,.view-partial-mktgregister .action.action-register,.view-partial-mktgregister .action.access-courseware{background-color:#4697ec;background-image:-webkit-gradient(linear, left top, left bottom, color-stop(5%, #4697ec),color-stop(95%, #4880bb));background-image:-webkit-linear-gradient(#4697ec 5%,#4880bb 95%);background-image:linear-gradient(#4697ec 5%,#4880bb 95%)}.view-partial-mktgregister .btn-secondary,.view-partial-mktgregister .action.is-registered{background-color:#999;background-image:-webkit-gradient(linear, left top, left bottom, color-stop(5%, #999),color-stop(95%, #666));background-image:-webkit-linear-gradient(#999 5%,#666 95%);background-image:linear-gradient(#999 5%,#666 95%)}.view-partial-mktgregister .btn-tertiary,.view-partial-mktgregister .action.isnot-open{background:#e6f5fc;color:#5597dd}.view-partial-mktgregister .list-actions{list-style:none;margin:0;padding:0}.view-partial-mktgregister .list-actions .item{margin:0}.view-partial-mktgregister .action.is-registered{pointer-events:none !important}.view-partial-mktgregister .action.isnot-open{pointer-events:none !important;outline:none}