Remove generated files

It is a good practice to only keep source files under version control.
Add an encoding cleanup script

It is not yet certain if the upstream project is willing to adopt
the cleanups, so the steps to redo the conversion are described
here.

The script could be removed in case OUSPG happens to accept the
proposed cleanup.
Fix encodings in text files

The previous state in the files was such that some files used
unix-style LF line endings and other ones used DOS-style CRLF
line endings. This change makes all files to use the
unix-style endings. For users who need to get CRLF style line
endings, Git allows an automatic conversion to them when it creates
a working copy.

This change alos swaps file encoding from ISO-8859-1 to UTF-8.
There should be little reason to not use UTF-8 nowadays.

It is quite unfortunate to have to do this kind of totally
intrusive change, but hopefully no one else is working on improving
the template right now.
Get rid of the \luku command

With this change, the standard \chapter command can be used
instead. This makes it a bit easier to change between templates.
Document that this is an unofficial version
Merge https://github.com/muep/cse-dtyo
Cleanup README.md to credit Joonas Sarajärvi