fix($location): search setter should not double-encode the value

By mistake both the setter and helper function that composes the whole
url were encoding the search values.

Closes #751

src/ng/location.js

@@ -335,7 +335,7 @@ LocationUrl.prototype = {
       if (paramValue === null) {
         delete this.$$search[search];
       } else {
-        this.$$search[search] = encodeUriQuery(paramValue);
+        this.$$search[search] = paramValue;
       }
     } else {
       this.$$search = isString(search) ? parseKeyValue(search) : search;

test/ng/locationSpec.js

@@ -330,6 +330,19 @@ describe('$location', function() {
         expect(url.search()).toEqual({'i j': '<>#'});
         expect(url.hash()).toBe('x <>#');
       });
+
+
+      it('should return decoded characters for search specified in URL', function() {
+        var locationUrl = new LocationUrl('http://host.com/?q=1%2F2%203');
+        expect(locationUrl.search()).toEqual({'q': '1/2 3'});
+      });
+
+
+      it('should return decoded characters for search specified with setter', function() {
+        var locationUrl = new LocationUrl('http://host.com/');
+        locationUrl.search('q', '1/2 3');
+        expect(locationUrl.search()).toEqual({'q': '1/2 3'});
+      });
     });
   });