Documentation
Changed category::getTopN() to new DB

Also changed zophTable::expandQueryForUser() to static (which it should
have been)

Issue #20
Changed category::getCountForUser() to new DB

Issue#20
Added INSERT functionality to new database

Issue #20
Changed category::addPhoto() to new db code

Also removed the "alias" possibility from INSERT queries, because it
turned out it didn't work (and is not really necessary).

Changed a testcase as it turned out to generate an SQL error (which was
ignored by the "old" db code).

Issue #20
Added code for DELETE queries to new db code

Issue #20
Moved category::removePhoto() to new db

Issue #20
Changed XML snippet in UnitTest for category class into something a little more readable
Added many testcases for the album class

Also made some changes in the album class itself because the unittests
revealed some previously unknown issues.

Issue #29
Moved album::lookup() and album::addPhoto() to new db

Issue #20
Move album::removePhoto() and album::getChildren() to new db

Issue #20
Moved album::getTotalPhotoCount() to new db

Issue #20
Merged album::getChildrenForUser() back into album:getChildren()