Fixed broken InfiniteContainer process

[fkloes]

Description

This ticket fixes a bug that prevented that one could open the same category multiple times in a row. It contains a refactoring of the system which is used to determine the scroll container of a page.

Type of change

• Bug Fix 🐛 (non-breaking change which fixes an issue)
• New Feature 🚀 (non-breaking change which adds functionality)
• Breaking Change 💥 (fix or feature that would cause existing functionality to not work as expected)
• Polish 💅 (Just some cleanups)
• Docs 📝 (Changes in the documentations)
• Internal 🏠 Only relates to internal processes.

How to test it

• open a category like "4. all products"
• scroll down to get some more products
• open the "Browse" page or pick "Categories" from the NavDrawer and select the previous opened category

When you scroll down now, the InfiniteContainer should add the cached products

[richardgorman]

I don't think that we need this new component. Instead of passing the ref to this component, the consumption of the ref could happen inside the and then be passed down to the content component.

[fkloes]

done

[richardgorman]

See code comment

[coveralls]

Pull Request Test Coverage Report for Build 1571

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.02%) to 47.129%

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Totals
Change from base Build 1570:	-0.02%
Covered Lines:	4839
Relevant Lines:	9698

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💛 - Coveralls