Remove covenant transmog restrictions

[Voxheart-moon-guard]

@Kaivax

Once you’ve reached a high Renown threshold, you will thereafter be able to freely switch among any of the four Covenants without cooldown or restriction, as well as use cosmetic rewards that you have earned from one covenant even if you are currently a member of a different one. Both the Covenant switching and the use of cosmetic rewards will also apply to alts once the Renown threshold is reached on one character.

/10characters