Production release 4.9.13

Implemented enhancements:

• When bulk deactivating issues, make sure it's done asynchronously #787

Closed issues:

• Override stops controller to use 'stops' as root #862
• Save Feed fetch errors as issues #820

Merged pull requests:

• Stop serializer root fix #861 (irees)
• feed fetch errors create issues #844 (doublestranded)