Implementing infinite scroll

Basically just re-uses the previous IncrementalResult with an updated data
filter for the page to query for.

Also solved the array adapter refresh issue. (No longer need to re-create
array adapters.)
Removing commented out code blocks.
Merge pull request #160 from Mobius5150/infinitescroll

Implementing infinite scroll
Implemented a first pass search.
Merged with upstream. Implemented a functioning search in QuestionList
Fixed an issue with including uneccesary files.
Cleaned up code a bit. Merged with upstream.
Merged with my master.