Improvements to the quality of artworks and user images - Part 2 (#512)

* Improved the overall appearance of user images

* Rounded photo in 'My profile' page

* Improved quality of media artwork

* fix some minor bugs introduced from a merge conflict

src/css/dashboard.css

@@ -252,6 +252,16 @@ div[data-role=controlgroup] a.ui-btn-active {
     width: 100% !important
 }
 
+.activitylogUserPhoto {
+    height:1.71em;
+    width:1.71em;
+    border-radius:100%;
+    margin-right:.5em;
+    background-size:cover;
+    background-repeat:no-repeat;
+    background-position:center;
+}
+
 @media all and (min-width:40em) {
     .activeSession {
         width: 100% !important

src/css/librarybrowser.css

@@ -67,9 +67,12 @@
     display: inline-block
 }
 
-.headerUserButtonRound img {
+.headerUserButtonRound div {
     -webkit-border-radius: 100em;
-    border-radius: 100em
+    border-radius: 100em;
+    background-size: cover;
+    background-repeat: no-repeat;
+    background-position: center center;
 }
 
 .headerButton {