gitignore added;
Merge branch 'master' of https://github.com/europeana/uim-core.git
Merge branch 'master' of https://github.com/europeana/uim-core.git
more structure to logging and storage engines;
refactoring to make better names;
refactoring logging engine;
Merge branch 'master' of https://github.com/europeana/uim-core.git
use message;