1.24.10

• e032350 fixed answer appears multiple times, delete answer link broken
• 7c700af added welcome email
• ed97050 fixed a few bugs related to post comments
• 70dc2df fixed 404 on feedback posts
• c58bb76 added SMTP/JavaMail implementation of the Emailer service
• eaf6839 fixed og:image URL should be absolute in production
• 27cadbe made thumbnail image smaller
• aae8101 added social meta tags
• 2e4d2a9 better answers view
• 870d445 fixed canEdit() checks for answers
• 0e4dc2c fixed sorting of questions, tags