Add data: URL folding for CSS.

Regex might need tweaking to catch all cases, but it catches the basics.

shared/naturalcrit/codeEditor/codeEditor.jsx

@@ -433,9 +433,17 @@ const CodeEditor = createClass({
 				}
 				text = foldPreviewText || `Lines ${from.line+1}-${to.line+1}`;
 
+
 				text = text.replace('{', '').trim();
+
+				// Extra data url chomping
+				console.log(text);
+				text = text.indexOf('data:') > -1 ? `${text.slice(0, text.indexOf('data:') + 5)} ...` : text;
+				console.log(text);
+
 				if(text.length > maxLength)
-					text = `${text.substr(0, maxLength)}...`;
+					text = `${text.slice(0, maxLength)}...`;
+
 
 				return `\u21A4 ${text} \u21A6`;
 			}

shared/naturalcrit/codeEditor/fold-css.js

@@ -38,6 +38,18 @@ module.exports = {
 				};
 			}
 
+			// data-url folding FOR CSS.
+
+			const dataURLMatcher =  /url\(.*?data\:.*\)/;
+
+			if(activeLine.match(dataURLMatcher)) {
+				return {
+					from : CodeMirror.Pos(start.line, 0),
+					to   : CodeMirror.Pos(start.line, cm.getLine(start.line).length)
+				};
+			}
+
+
 			return null;
 		});
 	}