fixed flow errors on a few 'view.jsx' files and 'form-field.jsx'

src/renderer/component/button/view.jsx

@@ -22,7 +22,7 @@ type Props = {
   button: ?string, // primary, secondary, alt, link
   noPadding: ?boolean, // to remove padding and allow circular buttons
   uppercase: ?boolean,
-  iconColor: ?string,
+  iconColor?: string,
   tourniquet: ?boolean, // to shorten the button and ellipsis, only use for links
 };
 

src/renderer/component/cardVerify/view.jsx

@@ -50,7 +50,7 @@ class CardVerify extends React.Component {
 
     const script = document.createElement('script');
     script.src = 'https://checkout.stripe.com/checkout.js';
-    script.async = 1;
+    script.async = true;
 
     this.loadPromise = (() => {
       let canceled = false;

src/renderer/component/channelTile/view.jsx

@@ -13,6 +13,7 @@ type Props = {
   claim: ?{
     claim_id: string,
     name: string,
+    permanent_url: string,
   },
   resolveUri: string => void,
   navigate: (string, ?{}) => void,

src/renderer/component/common/form-components/form-field.jsx

@@ -25,7 +25,7 @@ type Props = {
   affixClass?: string, // class applied to prefix/postfix label
   firstInList?: boolean, // at the top of a list, no padding top
   autoFocus?: boolean,
-  inputProps: {
+  inputProps?: {
     disabled?: boolean,
   },
 };