improve tipping walkthrough: don't display if user doesn't have sats, more generic error message

components/fund-error.js

@@ -36,7 +36,7 @@ export function FundErrorModal () {
     >
       <div className='modal-close' onClick={() => setError(false)}>X</div>
       <Modal.Body>
-        <p className='font-weight-bolder'>you have no sats</p>
+        <p className='font-weight-bolder'>you need more sats</p>
         <div className='d-flex justify-content-end'>
           <Link href='/wallet?type=fund'>
             <Button variant='success' onClick={() => setError(false)}>fund</Button>

components/upvote.js

@@ -76,12 +76,13 @@ export default function UpVote ({ item, className }) {
   const setVoteShow = (yes) => {
     if (!me) return
 
-    if (yes && !me.upvotePopover) {
-      _setVoteShow(yes)
+    // if they haven't seen the walkthrough and they have sats
+    if (yes && !me.upvotePopover && me.sats) {
+      _setVoteShow(true)
     }
 
     if (voteShow && !yes) {
-      _setVoteShow(yes)
+      _setVoteShow(false)
       setWalkthrough({ variables: { upvotePopover: true } })
     }
   }
@@ -90,13 +91,13 @@ export default function UpVote ({ item, className }) {
     if (!me) return
 
     // if we want to show it, yet we still haven't shown
-    if (yes && !me.tipPopover) {
-      _setTipShow(yes)
+    if (yes && !me.tipPopover && me.sats) {
+      _setTipShow(true)
     }
 
     // if it's currently showing and we want to hide it
     if (tipShow && !yes) {
-      _setTipShow(yes)
+      _setTipShow(false)
       setWalkthrough({ variables: { tipPopover: true } })
     }
   }