platform: set cache-control headers on kvstore plugin
platform: set cache-control headers on kvstore plugin

litecoin-association/LoafWallet,voisine/breadwallet,thrasher-/breadwallet,litecoin-association/LoafWallet,voisine/breadwallet,voisine/breadwallet,breadwallet/breadwallet,voisine/breadwallet,litecoin-association/LoafWallet,thrasher-/breadwallet,voisine/breadwallet,breadwallet/breadwallet,litecoin-association/LoafWallet,breadwallet/breadwallet