Improved dialog API

package.json

@@ -83,7 +83,7 @@
         "c9.ide.imgeditor": "#08bbc53578",
         "c9.ide.immediate": "#e9ba147cc2",
         "c9.ide.installer": "#24e7d6f399",
-        "c9.ide.mount": "#c9d598b254",
+        "c9.ide.mount": "#eac3f96d4f",
         "c9.ide.navigate": "#1ff8b463aa",
         "c9.ide.newresource": "#9a7464cc47",
         "c9.ide.openfiles": "#28a4f5af16",

plugins/c9.ide.dialog/dialog.js

@@ -175,7 +175,7 @@ define(function(require, module, exports) {
                     implementation();
                     
                     // Update UI
-                    if (!custom) {
+                    if (!custom && (heading || body)) {
                         titles.$int.innerHTML = "<h3 style='margin:0 0 10px 0'>" 
                             + heading + "</h3><div class='alertMsg'>" 
                             + body + "</div>";

plugins/c9.ide.layout.classic/themes/default-dark-gray.less

@@ -1591,7 +1591,7 @@
 @upload-frame-item-color: #e1e1e1;
 
 // Mount
-@mount-container-padding: 18px 10px 12px 10px;
+@mount-container-padding: 8px 0px 2px 0px;
 @mount-loading-background: rgba(0,0,0,0.5);
 @mount-loading-color: #f1f1f1;
 

plugins/c9.ide.layout.classic/themes/default-dark.less

@@ -1591,7 +1591,7 @@
 @upload-frame-item-color: #e1e1e1;
 
 // Mount
-@mount-container-padding: 18px 10px 12px 10px;
+@mount-container-padding: 8px 0px 2px 0px;
 @mount-loading-background: rgba(0,0,0,0.5);
 @mount-loading-color: #f1f1f1;
 

plugins/c9.ide.layout.classic/themes/default-flat-light.less

@@ -1591,7 +1591,7 @@
 @upload-frame-item-color: #333;
 
 // Mount
-@mount-container-padding: 20px;
+@mount-container-padding: 5px 0 0 0;
 @mount-loading-background: rgba(0, 0, 0, 0.17);
 @mount-loading-color: #333;
 

plugins/c9.ide.layout.classic/themes/default-light-gray.less

@@ -1591,7 +1591,7 @@
 @upload-frame-item-color: #e1e1e1;
 
 // Mount
-@mount-container-padding: 18px 10px 12px 10px;
+@mount-container-padding: 8px 0px 2px 0px;
 @mount-loading-background: rgba(0,0,0,0.5);
 @mount-loading-color: #f1f1f1;
 

plugins/c9.ide.layout.classic/themes/default-light.less

@@ -1591,7 +1591,7 @@
 @upload-frame-item-color: #e1e1e1;
 
 // Mount
-@mount-container-padding: 18px 10px 12px 10px;
+@mount-container-padding: 8px 0px 2px 0px;
 @mount-loading-background: rgba(0,0,0,0.5);
 @mount-loading-color: #f1f1f1;