Merge pull request #689 from MITx/bug/kfiedler/more-ie

One more IE fix and added comments so there is some explination of what ...

lms/static/sass/ie.scss

@@ -2,12 +2,14 @@
 @import "base/variables";
 
 // These are all quick solutions for IE please rewrite
+//Make overlay white because ie doesn't like rgba
 .highlighted-courses .courses .course header.course-preview, .find-courses .courses .course header.course-preview,
 .home .highlighted-courses > h2, .home .highlighted-courses > section.outside-app h1, section.outside-app .home .highlighted-courses > h1,
 header.global {
   background: #FFF;
 }
 
+// hide all actions
 .home > header .title .actions,
 .home > header .title:hover .actions {
   display: none;
@@ -34,10 +36,12 @@ header.global {
   }
 }
 
+// because ie doesn't like :last
 .last {
   margin-right: 0  !important;
 }
 
+// make partners not animate
 .home .university-partners .partners a {
   .name {
     position: static;
@@ -61,7 +65,6 @@ header.global {
 
 }
 
-
 .home .university-partners .partners { 
   width: 660px;
 
@@ -74,6 +77,7 @@ header.global {
   }
 }
 
+// make animations on homepage not animate and show everything
 .highlighted-courses .courses .course, .find-courses .courses .course {
   .meta-info {
     display: none;
@@ -126,17 +130,24 @@ header.global {
   }
 }
 
+// make overlay flat black since IE cant handle rgba
 #lean_overlay {
   background: #000;
 }
 
+// active navigation
 nav.course-material ol.course-tabs li a.active, nav.course-material .xmodule_SequenceModule nav.sequence-nav ol.course-tabs li a.seq_video.active, .xmodule_SequenceModule nav.sequence-nav nav.course-material ol.course-tabs li a.seq_video.active {
   background-color: #333;
   background-color: rgba(0, 0, 0, .4);
 }
 
+// make dropdown user consistent size
 header.global ol.user > li.primary a.dropdown {
   padding-top: 6px;
   padding-bottom: 6px;
 }
 
+// always hide arrow in IE
+.dashboard .my-courses .my-course .cover .arrow {
+  display: none;
+}