Make sure to update blogOptions at startup.
Otherwise user with one blog will get no options update. (blogOptions were only updated 'onBlogChanged').
Merge branch 'develop' of https://github.com/wordpress-mobile/WordPress-Android into issue/1736-update-blog-options-at-startup
Moved the refresh of BlogOptions to a RateLimitedTask executed onFromBackground().
Merge pull request #1869 from wordpress-mobile/issue/1736-update-blog-options-at-startup

Update blogOptions at startup