Updated Slovak translation

Conflicts:
	inc/locale/sk_SK/javascript.js
	inc/locale/sk_SK/javascript.po
	inc/locale/sk_SK/tinyboard.mo
	inc/locale/sk_SK/tinyboard.po
Updated Slovak translation 1
add lithuanian translation by marjo @ #opfuckmorsy. it's sorta outdated and incomplete, so you'd better update.
don't touch node_modules. that's mostly an internal commit, but teh public shouldn't mind
update polish translation
Updated Slovak translation 2