Fix bug of image max width (supposed to be width of its container)

css/AdminLTE.css

@@ -142,7 +142,7 @@ h6,
 }
 /* All images should be responsive */
 img {
-  max-width: 100%important;
+  max-width: 100% !important;
 }
 .sort-highlight {
   background: #f4f4f4;

less/core.less

@@ -140,7 +140,7 @@ h6,
 
 /* All images should be responsive */
 img {
-    max-width: 100%important;
+    max-width: 100% !important;
 }
 
 .sort-highlight {