MaLiLib

• Remove ButtonIcon and ButtonHoverText. ButtonGeneric now has those functions.
• Fix ButtonGeneric hover strings not getting split from '\n'
• Mark the file browser icon provider return value as @Nullable
• RenderUtils and inventory overlay util methods refactoring
• Tiny refactor to KeybindMulti. Add a util method to get the storage string.

Original build time: 2018-10-30 16:38:56 UTC+2