WIP: #49 handle notify data set changed and update internal list

[dvdciri]

This is WIP PR that is going to close #49.

I'll need to add unit tests and instrumentation tests and i'll be ready. The functionality is already there.
@smarques84

[smarques84]

The refreshDataSetInternal seems to have a bug, in the else if (mItemList.size() > getItemCount) i think you are supposed to remove items from the list not add them am I right?

My fix just flushes mItemList and repopulate with new data i did this because i have a custom filter option where i move and filter items on the fly on my recycler view i that case i think its best to just clear the list and repopulate

Or do you have another idea?

[dvdciri]

@smarques84 Do the changes here if you can (not sure about the permissions) and add some test otherwise i'm not sure when i'll be ablet to pick this up.

[dvdciri]

I'm gonna resume this PR, i've added the implementation as you said for just refreshing the dataset with a custom notifyAdapterDataSetChanged() as i can't override the notifyDataSetChanged() one. Will provide some testing and will be ready in the next release.

[adevezin]

Can we get an official look at this so it can be merged?