Build: Remove maxLineLength execption in .jscsrc

Also seperates tests into a seperate task because they still have many errors

Closes gh-1690

.jscsrc

@@ -8,8 +8,5 @@
 	"es3": true,
 
 	// We want to output all errors
-	"maxErrors": 1000000,
-
-	// Ref https://github.com/jquery/contribute.jquery.org/issues/80#issuecomment-45253460
-	"maximumLineLength": null
+	"maxErrors": 1000000
 }

Gruntfile.js

@@ -173,12 +173,21 @@ grunt.initConfig({
 	},
 
 	jscs: {
-		all: {
+		ui: {
 			options: {
 				config: true
 			},
 			files: {
-				src: [ "demos/**/*.js", "build/**/*.js", "tests/**/*.js", "ui/**/*.js" ]
+				src: [ "demos/**/*.js", "build/**/*.js", "ui/**/*.js" ]
+			}
+		},
+		tests: {
+			options: {
+				config: true,
+				maximumLineLength: null
+			},
+			files: {
+				src: [ "tests/**/*.js" ]
 			}
 		}
 	},