Schedule Content for XF 2.x 1.0.7

Notable changes:

• Fixed error call undefined method canEdit
• Added new page to listing all schedules

Notable Changes:

• Rewrite this add-on.

Re-attach file for window users.

Notable changes:

• Fixed schedule inputs still show to users did not have permissions.

• Remove default schedule date on new thread form

Fixed invalid date.

Notable changes:

• Added cron to publishing contents
• Added action while manual stop scheduling.
• Improvement add-on

• Added permission to restrict change owner content.