Protractor $timeout workaround

[boboldehampsink]

What issue is this PR resolving? Alternatively, please describe the bugfix/enhancement this PR aims to provide

Using angular-loading-bar, protractor tests often fail with the following message:

Failed: Timed out waiting for Protractor to synchronize with the page after 11 seconds. Please see https://github.com/angular/protractor/blob/master/docs/faq.md
    While waiting for element with locator - Locator: By(css selector, h1).
    The following tasks were pending:
     - $timeout: function () {
                _inc();
              }

This "pending task" is a angular-loading-bar function. According to similar problems here:

• Changed $timeout to $interval for scheduled user validation lynndylanhurley/ng-token-auth#196
• Avoid waiting for $timeout()s ? angular/protractor#169

We can use $interval to work around this problem. So I implemented $interval with a count of 1 at the cost of aforementioned $timeout

Have you provided unit tests that either prove the bugfix or cover the enhancement?
Tests have been updated

Related issues

None

[faceleg]

@chieffancypants if this fixes people's build I have no issue with merging.

[gastonelhordoy]

I can confirm the same approach was taken in other libraries, one that comes to my mind right now is growl-2:
JanStevens/angular-growl-2#103

[LeleDev]

@faceleg , yes it does

[boboldehampsink]

Any update on this?