Fix css bugs (opacity=) and changes in sign_in page

app/assets/stylesheets/widgets.css

@@ -53,11 +53,11 @@
 	display:inline-block;
 	margin-right: 5px;
 	opacity: 0.8;
-	filter: alpha(opacity:80);
+	filter: alpha(opacity=80);
 }
 .action:hover {
 	opacity: 1;
-	filter: alpha(opacity:100);
+	filter: alpha(opacity=100);
 	cursor: pointer;
 }
 .select-role {
@@ -95,23 +95,23 @@
 	opacity:.0;
     font-size: 60px;
     left: -595px/9;
-	filter: alpha(opacity: 0);
+	filter: alpha(opacity= 0);
 	outline: none;
 }
 .file-upload .upload:focus {
 	position:absolute;
-}
-.file-upload .input-medium {
-    border-radius: 3px 3px 3px 3px !important;
-    width: 267px;
-    position: relative;
-	z-index: 5;
-	display: block;
-	clear: both;
-}
-.file-upload .control-label {
-	margin-top: 0;
-	margin-bottom: 5px;
+}
+.file-upload .input-medium {
+    border-radius: 3px 3px 3px 3px !important;
+    width: 267px;
+    position: relative;
+	z-index: 5;
+	display: block;
+	clear: both;
+}
+.file-upload .control-label {
+	margin-top: 0;
+	margin-bottom: 5px;
 }
 .upload-picture {
 	margin-bottom: 5px;