UrlParams parses a URL without parameters incorrectly

[lkcampbell]

OS Version: Mac OSX Mavericks

Brackets Version: Sprint 33

Repro Steps:
Open Brackets source code, then open Dev Tools to Console and paste the following code snippet into the Console:

UrlParams = require("utils/UrlParams").UrlParams;
var params = new UrlParams();
params.parse("http://www.foobar.com");
params

Look at the value of params._store

Observed Result:
params._store is an object with one property: http://www.foobar.com: "undefined"

Expected Result:
There are no parameters in the URL so params._store should be an empty object.

Additional Notes:
UrlParams needs an isEmpty() method to test for this scenario.

[lkcampbell]

I am fixing this as part of a bigger fix for #5078. In addition to fixing this bug and adding the isEmpty() method, I will also be adding a remove() method and a set of unit tests for UrlParams.

[gruehle]

Reviewed. Low priority to @lkcampbell

[redmunds]

Thanks. Closing.