[enhancement] Created base modules.
[refactoring] Changed some methods to work with byte arrays.
Merge remote-tracking branch 'origin/dev' into dev

Conflicts:
	cowj/pom.xml
	gwt-keepass/pom.xml
	gwt-keepass/src/main/java/me/artspb/gwt/keepass/KeePassEditor.gwt.xml
	gwt-keepass/src/main/java/me/artspb/gwt/keepass/client/KeePassEditor.java
	keepass4j/pom.xml
	keepass4j/src/main/java/pl/sind/keepass/KeePass4j.gwt.xml
	keepass4j/src/main/java/pl/sind/keepass/util/Utils.java
.DS_Store added to .gitignore