Call first reload with $timeout

[aantipov]

Dunno why the directive was initialised with confusing $scope.$watch(datasource.revision, () => reload());
I didn't find use of datasource.revision anywhere else, so to make it clear I decided to replace it with $timeout(() => reload());

[mfeingold]

As explained in the description, the idea is (was) that you can set a property called 'revision' on the datasource, the scroller will $watch it. Changing the value of this property will trigger the scroller reload.

It is no longer in the description, but I wonder if people are still using it

[aantipov]

Ok, got it.
So this is an artefact from the past that we should leave as it is for the consistency with previous versions but remove in next major release, right?
If so, why not to mark that string of code as deprecated and add todo to replace it with other code in next major release?

[mfeingold]

On the second though, let us do it. BTW do we even need $timeout here? Would it work if we just call reload at the very end?

[aantipov]

Agree. I've removed $timeout wrapper and also removed some revision trails from demos.