Merge pull request #9 from krzysztof-gzocha/devel

Sync devel to master
Running unit tests on HHVM by default
Merge pull request #12 from krzysztof-gzocha/devel

Synchro devel to master
Merge branch 'devel' of github-kgzocha:krzysztof-gzocha/payu into devel
Added Logger to important services
Merge pull request #13 from krzysztof-gzocha/logger

Added Logger to important services
Merge branch 'master' of github-kgzocha:krzysztof-gzocha/payu into devel
Small fixes