Fix various glitches - thanks to @rcombs

• Fix Perl plugin: It will not be broken whenever new macOS is released.
• Localization based on Base.lproj+strings

Thanks to @rcombs, who fixed everything below:

• Bump up OpenSSL version. (not using macOS one anymore)
• Links will be marked as links. They will be a blue link and show link cursors.
• Fix automatic scrolling.
• Fix channel list shrinking when preferences are saved.
• Highlighting works better.
• Clicking notification will bring that channel to front
• Better styled notifications for PRIVMSG