fix #353: new post/page empty view
Merge branch 'develop' into issue/353-improve-post-empty-view
Merge branch 'develop' into issue/353-improve-post-empty-view
add new hdpi and xxhdpi resources for penandink icon
Merge pull request #354 from wordpress-mobile/issue/353-improve-post-empty-view

fix #353: new post/page empty view