Revert "Assert all post refs end with '-post' and TIL refs end with -til"...This reverts commit e0db9261ea31c38ea5b6de4246d9f651920443a0.
Now instead of having such restriction in name of separate "namespaces" for
posts and TILs, I'd rather have more meaninful names for each entry.
If this doesn't work on the long run (like being hard coming up with enw names)
I can add this restriction again.