Merge pull request #6 from alexander-ivanoff/ivanoff-dev

Paging for reviews, downloads, purchases
Merge pull request #7 from alexander-ivanoff/ivanoff-dev

fix for reviews, downloads, purchases
Merge pull request #8 from alexander-ivanoff/ivanoff-dev

some refactoring and preparation for appstore requester
Merge pull request #9 from alexander-ivanoff/ivanoff-dev

stuff for appstore requester
Merge pull request #10 from alexander-ivanoff/ivanoff-dev

small fixes in appstore requester
Merge pull request #11 from alexander-ivanoff/ivanoff-dev

FileSystem Storage by default + mysql drivers
Merge pull request #12 from alexander-ivanoff/ivanoff-dev

Ivanoff dev
Add javadoc
Javadocs
a
Javadocs + IDEA files removed