Added helper URL methods to Blog
Move WPWebViewController init to use automatic nib name detection
Added some extra spacing to UITableViewTextFieldCell

Text field overlapped label on iPad
Escape login parameters correctly
New flow for Jetpack settings

* Allow skipping Jetpack setup when adding a blog
* Moved Jetpack settings on EditSite to the new style
* Show Jetpack settings embedded on stats view when there are no credentials
* Improved style, specially for iPad
* "Install Jetpack" launches the install page directly