[Azoth] Paginated navigation for server history.
[Codegen] Added FindLLVM.cmake.
[Azoth] IHaveServerHistory::HasFeature() & config.

For #1536.
[Azoth Xoox] ServerInfoStorage::GetFeatures() for #1536.
Merge branch 'master' of github.com:0xd34df00d/leechcraft