Merge branch 'release-1.0.9' into develop
Clone temp TinyMCE objects to break reference.

By merely pointing to the temporary settings for a new TinyMCE object,
the reference would be updated each time a new TinyMCE object was
created. In some edge cases, this would cause erratic TinyMCE behavior.
The primary symptom of this issue was clicking the controls for one
TinyMCE editor would control another TinyMCE editor.
Add correct link to alternative social links method tutorial
Improving menu styles. Refs. #117
Fixing clearing issue with Jetpack sharing buttons. Refs. #123
Update changelog for 1.0.10.
Version 1.0.10.
Merge branch 'release-1.0.10'