Decode 2.9

### Added:
- Option to show Post thumbnails on individual post pages
- Menu locations in sidebar and footer
- Kickstarter social icon
- WordPress social icon
- Reddit social icon
- Yelp social icon
- Stack Overflow social icon
- Vine social icon
- PlayStation Network social icon
- Xbox Live social icon
- Etsy social icon
- Fancy social icon
- Diaspora social icon

### Improved:
- Menus on touch screens (finally) have working drop downs
- Menu locations don't output any markup unless they have a menu selected.
- Submenus display better
- Basically, I rewrote all the menu stuff... so there's that.
- Theme's HTML output is now as valid as possible
- No more @import in style.css making page loads faster
- Images within links in a post fade a little when hovered over
- Better SVG fallback
- Better Grunt workflow
- Updated screenshot and theme tags
- Switched to built-in translations and template for search form and comments.
- Updated German translation
- Improved Editor Styles

### Fixed:
- Respond.js works in IE 8
- Paging nav on search page is full width again
- Search keys breaking the ellipses link on search results
- Editor displays visited links the same as unvisited links
- `<title>` fix for Blog Page when the Front Page is a static page
- Google+ scrapes the title of pages correctly now.

### Notes:
- A long time ago, I changed the way LinkedIn profile URLs were setup but maintained backwards compatibility so nobody's LinkedIn icon would disappear upon updating. I got rid of that in the release to simplify the code and cut down on cruft. 
- Your header menu may need to be selected again in Admin > Appearance > Menus > Manage Locations. Check out the new menu location options while you are there!
- If you had the header menu set to be hidden in the Header Options section, this setting will need to be set again.