GUAC-932: Restyle login page and general UI.

guacamole/src/main/webapp/app/index/styles/buttons.css

@@ -33,6 +33,7 @@ input[type="submit"], button, a.button {
     text-shadow: -1px -1px rgba(0, 0, 0, 0.3);
     font-size: 1em;
     font-weight: bold;
+    font-family: Carlito, FreeSans, Helvetica, Arial, sans-serif;
 
     padding: 0.35em 1em;
     min-width: 5em;

guacamole/src/main/webapp/app/index/styles/status.css

@@ -72,11 +72,11 @@
     box-shadow: 0 1px 2px rgba(0, 0, 0, 0.125);
     margin: 0;
     padding: 0.5em 1em;
+    text-transform: uppercase;
 }
 
 .status.error {
     background: #FDD;
-    border: 1px solid #964040;
 }
 
 .status > * {

guacamole/src/main/webapp/app/index/styles/ui.css

@@ -34,10 +34,6 @@ body {
     margin: 0;
 }
 
-input[type="submit"], button {
-    font-family: Carlito, FreeSans, Helvetica, Arial, sans-serif;
-}
-
 img {
     border: none;
     vertical-align: middle;