Changes

tsk27 Adds Git hook to check code formatting
A pre-commit Git hook is added to reject making a local commit if the 
code is not formatted as expected. To make sure that we don't do 
anything the developer doesn't want to, we don't format the code or add 
any change to the commit. Therefore, the developer must run mvn 
formatter:format to fix any formatting mistakes in its working tree to 
make a commit.
Every developer should run the added setup.sh script with a Unix shell
(on Windows, use the Git Bash shell) in order for the hook to work.
In exceptional circumstances, it is possible to skip the execution of 
this hook with the --no-verify option.