Mailplane 2.1.7 released

Release notes:

• FIX: CMD-L showed empty list (Gmail changes).
• UPDATED: Spanish translation by Juan Antonio
• FIX: Unwanted scrolling when using Google Talk in the main window (Spanish only)
• FIX: Auto-Signin didn't work when password wasn't stored in the keychain
• FIX: Possible fix for account switching/loading problem.