Revert "Change flip cover strings"

This reverts commit 249bf84281eb086c82eb298bf66eaf0fb0f41c91.
Revert "Switch to enable/disable flip covers"

This reverts commit cca5ce2a597c2f06fdf24d464c07f1e3c00f17a0.

Conflicts:
	res/values/cm_strings.xml