Added academic logo, updated google logo

src/themes/d4science/login/resources/css/d4science.css

@@ -331,6 +331,24 @@ a.zocial  {
 .zocial.microsoft:before{ content: "\f15d"; }
 .zocial.stackoverflow:before{ color: inherit; }
 
+.zocial.oidc:before{
+  content: " ";
+  background: url(../img/academic.png);
+  height: 25px;
+  width: 25px;
+  background-size: contain;
+  background-repeat: no-repeat;
+  margin: 3px 3px 3px 7px; 
+}
+.zocial.google:before{
+  content: " ";
+  background: url(../img/google.png);
+  height: 16px;
+  width: 16px;
+  background-size: contain;
+  background-repeat: no-repeat;
+  margin: 6px 8px 8px 8px;
+}
 
 @media (min-width: 768px) {
     #kc-container-wrapper {