Update $location API Close #62
Update $location API Close #62

update(objOrString)
updateHash(objOrString [, objOrString])
toString()
cancel()

Examples:
$location.update('http://www.angularjs.org/path#path?a=b');
$location.update({port: 443, protocol: 'https'});
$location.updateHash('hashPath');
$location.updateHash({a: 'b'});
$location.updateHash('hashPath', {a: 'b'});

This commit was produced by squash of more commits, here are the old messages:

- Change tests to use update() instead of parse().
- First implementation of update() method
- Test for update() with object parameter
- Add new tests for location, refactor location code
- Add tests for updateHash()
- Implement updateHash()
- Take one or two arguments, could be string - update hashPath, or hash object - update hashSearch...
- Fixed other service tests, to use new $location.update()
Added $location.cancel() method (with test)
Added $location.parse() for back compatability
Remove parse() method

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