added lithuanian language dummy file (copy from default one) as a tem…

…plate to be translated mRemoteNG#878

also fix installer project cert password reference

updated changelog and bumped version to 1.76.20

Merge pull request mRemoteNG#1390 from mRemoteNG/release/v1.76

Release/v1.76

bumped version to v1.76.18 and updated changelog

bumped version to v1.76.17 and updated changelog

updated changelog

Add total downloads badge

bumped v1.76.15 release date

Port FIPS override back to 1.76

Fixes mRemoteNG#222