Twenty Fifteen: squeeze a few more bytes from screenshot PNG file. See #30133.

git-svn-id: https://develop.svn.wordpress.org/trunk@30043 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: escape variable in HTML attribute output in customer header. See #30133.

git-svn-id: https://develop.svn.wordpress.org/trunk@30044 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: spacing and code style cleanup. See #30133.

git-svn-id: https://develop.svn.wordpress.org/trunk@30045 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: consistent line endings and SVN properties on all files. See #30133.

git-svn-id: https://develop.svn.wordpress.org/trunk@30046 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: pinking shears. See #30133.

git-svn-id: https://develop.svn.wordpress.org/trunk@30047 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: minor code style for variable within array notation. See #30133.

git-svn-id: https://develop.svn.wordpress.org/trunk@30048 602fd350-edb4-49c9-b593-d223f7449a82
Twenty Fifteen: minor CSS spacing fix. See #30133.

git-svn-id: https://develop.svn.wordpress.org/trunk@30049 602fd350-edb4-49c9-b593-d223f7449a82