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L4D1 Beta Difficulty Names

Yeah, I noticed that nobody on the workshop has done this for L4D2. That, or the workshop search function is lying to me. Either way, here you go, the laziest possible beta mod that could ever be made.

Basically, L4D1 had different difficulty names for a long time, and they were changed last minute. All that's different is instead of Hard and Impossible we got Advanced and Expert. Fun fact, the difficulties are still referred to these old names in the files! Both in the translation files and the UI files.

It was seen in footage of the Xbox version of the game, when it had a drastically different UI from the PC version. I've included images of it, as well as the Youtube upload of said footage. The names are seen at around 46 seconds in. I wanted to have it timestamped but Steam won't allow that for some reason.

Should work with any UI mods. It doesn't change the text used in the tab menu, or the vote pop-up. I have made sure it changes in places like the lobby, but only in English as it requires editing localization files.
I'll try to update it if that happens, but no promises on being speedy about it.