I do seem to remember that being the case at some point, but at present, the 'bug' icon is being used there as well. Perhaps it was unintentionally changed at some point?
Forge already provides a config option:
# Chance that a zombie (or subclass) is a baby. Allows changing the zombie spawning mechanic.
D:zombieBabyChance=0.05
[10:00:55] [Server thread/ERROR] [FML]: A fatal exception occurred during the server about to start event
net.minecraftforge.fml.common.LoaderExceptionModCrash: Caught exception from Aether II (aether)
Caused by: java.lang.RuntimeException: Base directory for OrbisProjectManager cannot be created!
Probably caused by a lack of write permissions for the directory it's trying to create a subdir in.
This is a Mekanism issue:
https://github.com/aidancbrady/Mekanism/issues/5205
The gravity gun mod seems to be closed-source so it's hard to be sure, but it's likely an issue with that mod too:
https://github.com/iChun/IssueTracker-Mods/issues/155
level.dat is a data file. This means that, unlike logs and config files, uploading it to a service like Gist isn't very helpful.
Just add it as a normal file attachement in these cases.