Fix Composer Issues from Design QA

• Schedule post menu should anchor to bottom right of the button
• Visibility/License menu should anchor top left of the ellipsis trigger
• 2nd level menus (License/Visibility) should anchor top right left of the parent option
• 2nd level menus (License/Visibility) should overlap a little over its parent menu
• Add right padding on general text body and trending tags list on Hashtags popup
• Title spacing, paddings and bottom bar height (action button) should be the same on main composer and popups
• Avoid height jumping when adding a new tag on Hashtags popup
• Avoid height jumping on calendar when browsing through months on Schedule Post popup
• Avoid height jumping when clicking Enable Paywall on Monetize popup
• The popup [X] button should be replaced with a "Close" label