Strike Data Grid should control 'Load More' button visibility on data change

[kevinberonilla]

A change handler can be added to the data attribute that runs logic to set the proper v.showLoadMore value. This is currently only an issue if a table initially has more than 10 rows (or whatever v.loadMoreAmount is set to), and then changes to have less rows than that. The 'Load More' button still appears in that situation.

Also, there's no space in the button text; should be 'Load More' not 'LoadMore.'

[daneowens3]

I've added a fix so the button is handled more intuitively and added a space to the button's label. Will reflect in next release