Tooltip code, widescreen layout, hide auto-expands

Slightly better layout for wide screens.

Marlin/configurator/config/Configuration.h

 // REMEMBER TO INSTALL LiquidCrystal_I2C.h in your ARDUINO library folder: https://github.com/kiyoshigawa/LiquidCrystal_I2C
 //#define RA_CONTROL_PANEL
 
+// @section hidden
+
 //automatic expansion
 #if defined (MAKRPANEL)
  #define DOGLCD
   #endif
 #endif
 
+// @section lcd
+
 // default LCD contrast for dogm-like LCD displays
 #ifdef DOGLCD
 # ifndef DEFAULT_LCD_CONTRAST

Marlin/configurator/css/configurator.css

 #main {
 	max-width: 1000px;
 	margin: 0 auto;
- 	padding: 0 4%; width: 92%;
+ 	padding: 0 2%; width: 96%;
 	}
 
 h1, h2, h3, h4, h5, h6 { clear: both; }
 label, input, select, textarea { display: block; float: left; margin: 1px 0; }
 label.newline, textarea, fieldset { clear: both; }
 label {
-	width: 140px; /* label area */
+	width: 120px; /* label area */
 	height: 1em;
 	padding: 10px 460px 10px 1em;
 	margin-right: -450px;
 	text-decoration: none;
 	}
 
+@media all and (min-width: 1100px) {
+
+	#main { max-width: 10000px; }
+
+	fieldset { float: left; width: 50%; height: auto; }
+
+	#config_text, #config_adv_text { float: right; clear: right; width: 45%; }
+
+}

Marlin/configurator/js/configurator.js

       // Success?
       if (info.type) {
         // Get the end-of-line comment, if there is one
-        var tooltip = '';
+        var tooltip = '', eoltip = '';
         findDef = new RegExp('.*#define[ \\t].*/[/*]+[ \\t]*(.*)');
         if (info.line.search(findDef) >= 0)
-          tooltip = info.line.replace(findDef, '$1');
+          eoltip = tooltip = info.line.replace(findDef, '$1');
 
         // Get all the comments immediately before the item
         var r, s;
-        findDef = new RegExp('(([ \\t]*(//|#)[^\n]+\n){1,4})([ \\t]*\n)?' + info.line.regEsc(), 'g');
+        findDef = new RegExp('(([ \\t]*(//|#)[^\n]+\n){1,4})' + info.line.regEsc(), 'g');
         if (r = findDef.exec(txt)) {
           // Get the text of the found comments
           findDef = new RegExp('^[ \\t]*//+[ \\t]*(.*)[ \\t]*$', 'gm');
           while((s = findDef.exec(r[1])) !== null) {
-            var tip = s[1].replace(/[ \\t]*(={5,}|@section[ \\t]+\w+)[ \\t]*/g, '');
+            var tip = s[1].replace(/[ \\t]*(={5,}|(#define[ \\t]+.*|@section[ \\t]+\w+))[ \\t]*/g, '');
             if (tip.length) {
-              if (tip.match(/^#define[ \\t]/) != null) {
-                tooltip = '';
-                break;
-              }
+              if (tip.match(/^#define[ \\t]/) != null) tooltip = eoltip;
               // JSON data? Save as select options
               if (!info.options && tip.match(/:[\[{]/) != null) {
                 // TODO