They were accidentially removed in commit cf183560 believing they had been
correctly moved by Visual Studio when refactoring the code and just forgotten
in the directory hierarchy. Who could guess Windows is so ignorant when
resolving paths?

Refers to #22

There is no need to test a status file for correctness as the status
class will simply create a new object with default values in case
parsing an existing file fails.

Refers to #22, #28

One file ("config.common.xml") containing site-global configuration
settings, the other one (the file name equals the host name with a
".xml" suffix) containing host-specific settings.

Both files use the same syntax and may contain the same setting
attributes with the host-specific one having priority over the
site-global one.

Refers to #18

Refers to #3

Refers to #28

Following the new naming guidelines.