TerminalLink: updated interface to match
convert all XIBs under XCode5 interface builder format

it is human-readable and diffable!
converted licensing dialog to use Auto Layout
retina version of some important icons
disable auto-layout in TabsTabView.xib
small tweaks to layouts
removed some GTMUILocalizers
don't use auto layout in TabsBrowserWindow.xib
GTMUILocalizerAndLayoutTweaker is no longer needed, use GTMUILocalizer
fix XIB warnings
add Terminal icon for TerminalLink plugin
remove references to menuTag (no longer used)
Added sidebar and toolbar preference views
Update FileBrowsing and TerminalLink strings