Fix invalid jars location

Thanks to Tobias Astrom for reporting the issue.

Update README.md and BUILD.md

NOISSUE enable listing symlinks in mod/world lists

NOISSUE fix typo in changelog

NOISSUE update version number, changelog and credits in about dialog

NOISSUE no means no, MultiMC#2

NOISSUE no means no.

NOISSUE fix some changelog wording

NOISSUE do not lose selection on mod enable/disable toggle

NOISSUE bump deb package version