use checksum address in UI

src/app/ui/universal-dapp-ui.js

@@ -59,6 +59,7 @@ UniversalDAppUI.prototype.renderInstance = function (contract, address, contract
 UniversalDAppUI.prototype.renderInstanceFromABI = function (contractABI, address, contractName) {
   var self = this
   address = (address.slice(0, 2) === '0x' ? '' : '0x') + address.toString('hex')
+  address = ethJSUtil.toChecksumAddress(address)
   var instance = yo`<div class="instance ${css.instance} ${css.hidesub}" id="instance${address}"></div>`
   var context = self.udapp.context()