Replicate layout does not handle component rotation on back side

[VA3YAO]

Components on back side are rotated incorrectly. The replicated component is rotated the inverse of the pivot component. For example:

• pivot = 90, replicated = 270
• pivot = 270, replicated = 90

I am running KiCad 5.1.2-201904240820+f72e74a~84~ubuntu18.04.1 amd64.

[VA3YAO]

For example:

Red arrow points at the dot used to denote pin 1 orientation. Bottom is pivot. Top is replicated.

This does not impact components oriented at 0 or 180. This does not impact components on board front.

[VA3YAO]

Made a pull request for a candidate solution for you guys.