The script will create a environment file keeping all the major settings and
installs a systemd unit file.
The script (mainly the unit file part) should also work for other systemd
based distributions like ArchLinux. But /etc/sysconfig may not exist there.

Signed-off-by: Soeren Grunewald <soeren.grunewald@desy.de>

We already highlight C/C++ source files with the default configuration,
so we should do this also for header files.

Signed-off-by: Soeren Grunewald <soeren.grunewald@desy.de>

Since perl scripts (.pl) was already supported, add .pm for perl modules

In AuthenticationManager:385, only `provider instanceof UsernamePasswordAuthenticationProvider` will be called

Conflicts:
	src/main/java/com/gitblit/servlet/RawServlet.java

Conflicts:
	src/main/java/com/gitblit/servlet/RawServlet.java