Prepare for localization
Refactor About window
Make popup window topmost
reduce AboutWindowController.xib file size
Refactored about window
Localized main menu
Localized error message
Switch to Asset Catalog
Refactor auth tips popover window
Localized GeneralPreferencesView
Rename tip view
no message
Refactor xxxPreferencesViewController
Localized servers preferences view controller
Localized WhitelistPreferencesView
Turn custom socks5 proxy off when disconnected from SSH server
Tune the Chinese translation
* localize BasePreferencesViewController
* localize submenus
* add help button on every preference view
* add Razvan C. Oprea in Credits
fix referencing outlet
localize askpass