The code is from OJP. Check out these key parts:
https://github.com/Razish/japp/blob/df24d0e/game/anims.h#L1726-L1730
https://github.com/Razish/japp/blob/df24d0e/game/animtable.h#L1728-L1732
https://github.com/Razish/japp/blob/df24d0e/cgame/animtable.h#L1731-L1735
https://github.com/Razish/japp/blob/df24d0e/game/bg_pmove.cpp#L1347-L1349
https://github.com/Razish/japp/blob/df24d0e/game/bg_pmove.cpp#L1483-L1662
https://github.com/Razish/japp/blob/df24d0e/game/bg_pmove.cpp#L1685-L1849
https://github.com/Razish/japp/blob/df24d0e/game/bg_pmove.cpp#L7927-L7929
https://github.com/Razish/japp/blob/df24d0e/game/bg_pmove.cpp#L7949-L7952
https://github.com/Razish/japp/blob/df24d0e/game/bg_pmove.cpp#L8082-L8086
The mod loading menu is populated by folders that contain a description.txt file, e.g. GameData/japlus/description.txt (well, GameData equivalent for Mac)
Confirm that file exists in that location, the files may just be in the wrong folder.
WRT animation/stance mods, try adjust the name of the PK3 so it comes before/after sh_animations.pk3 alphabetically. Make sure you put it in japlus folder too.
I'll look into the soundset issue on ffa_episode1_2004.
The text overlapping issue when creating a server has been reported before, it's just low priority and hasn't been fixed yet.
Going to need more info than "won't work"
How do you know it isn't working? Are you getting any error messages?
Did you download the correct version of JA+ and install it correctly?
You could also try OpenJK with JA++
If using d_saberSPStyleDamage 1, use sv_fps 20
If using d_saberSPStyleDamage 0, tweak japp_saberBlock***, just about all values of japp_saberTweaks, g_saberTraceSaberFirst, d_saberInterpolate, d_saberBoxTraceSize, d_saberAlwaysBoxTrace
Hmm, the URL issue seems related to your name. There are some alignment issues due to r_aspectCorrectFonts and width calculation, but in this case the highlight isn't even of the correct characters.
Can I get a copy/paste-able version of your name?
With OpenJK: r_mode -2
r_fullscreen 1
vid_restartWithout OpenJK: r_mode -1
r_customWidth 1920
r_customHeight 1080
r_fullscreen 1
vid_restartEDIT: I should really not leave tabs open for hours without replying. As for OpenJK SP, try launching it with +set fs_game "OpenJK"