remove coding schemes like S00L02_... from from html files

[rmonajemi]

With a schedule change the hard links in the documents will break.

[SzMK]

This is not a good way to go.
Having SxxLyy organises the files so students can see order of lectures.
Linking between files can be done in another way.

[rmonajemi]

This is not a good way to go.
Having SxxLyy organises the files so students can see order of lectures.
Linking between files can be done in another way.

I do not agree. Students can see the order on the Schedule page and not through file ids. The issue of the order can be solved through config file programmatically.