Fix some tabbing issues on the post editing screen. Add Media no longer skipped when going backwards from content. Save Draft no longer skipped when going forwards from content.

props adamsilverstein. fixes #23195 and #22933

git-svn-id: https://core.svn.wordpress.org/trunk@23395 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Link post formats in posts list table. Use a dash for standard, like we do for absence of tags. see #16047 Next: use icons, not text descriptions.

git-svn-id: https://core.svn.wordpress.org/trunk@23396 1a063a9b-81f0-0310-95a4-ce76da25c4cd