Fixes issues with handling additional dots in the filename in many
places.

Task: 246390

Now it will only update the list of files when you edit [project].files,
and only reparse all files when you edit [project].config or
[project].includes. When updating the file list it will only parse the
added files.

The name is used as the base for files like [project].creator,
[project].files, etc. and is displayed in the Projects mode and the
Projects tree.

For now only for GenericProject, since the CMakeProject doesn't have the
right tool chain set on Windows yet.

Reviewed-by: dt

Was a bit confusing that a MakeStep was constructed by a
MakeBuildStepFactory and configured by a MakeBuildStepConfigWidget.

The MakeStep of the generic project manager was renamed to
GenericMakeStep.

Reviewed-by: Roberto Raggi

The entered information isn't stored yet for now, though.