fix(ng:pattern): correctly parse out inlined regexp

Author: IgorMinar

src/widget/input.js

@@ -732,7 +732,7 @@ angularWidget('input', function(inputElement){
          patternMatch = valueFn(true);
        } else {
          if (pattern.match(/^\/(.*)\/$/)) {
-           pattern = new RegExp(pattern.substring(1, pattern.length - 2));
+           pattern = new RegExp(pattern.substr(1, pattern.length - 2));
            patternMatch = function(value) {
              return pattern.test(value);
            }

test/widget/inputSpec.js

@@ -536,9 +536,9 @@ describe('widget: input', function() {
         {min:0, max:1});
 
 
-    itShouldVerify('text with inlined pattern contraint',
+    itShouldVerify('text with inlined pattern constraint',
         ['', '000-00-0000', '123-45-6789'],
-        ['x000-00-0000x', 'x'],
+        ['x000-00-0000x', 'x000-00-0000', '000-00-0000x', 'x'],
         {'ng:pattern':'/^\\d\\d\\d-\\d\\d-\\d\\d\\d\\d$/'});