;lib: a few more zero-checking function references

hledger-web/templates/balance-report.hamlet

@@ -7,8 +7,8 @@
 $forall (acct, adisplay, aindent, abal) <- items
   <tr
      :matchesAcctSelector acct:.inacct
-     :isZeroMixedAmount abal && hideEmpty:.hide>
-    <td .acct :isZeroMixedAmount abal:.empty>
+     :mixedAmountLooksZero abal && hideEmpty:.hide>
+    <td .acct :mixedAmountLooksZero abal:.empty>
       <div .ff-wrapper>
         \#{indent aindent}
         <a.acct-name href="@?{(registerR, [("q", replaceInacct q $ accountQuery acct)])}"

hledger-web/templates/journal.hamlet

@@ -21,7 +21,7 @@ $if elem CapAdd caps
         <td colspan=2>
           #{textElideRight 60 (tdescription torig)}
         <td .amount style="text-align:right;">
-          $if not split && not (isZeroMixedAmount amt)
+          $if not split && not (mixedAmountLooksZero amt)
             ^{mixedAmountAsHtml amt}
 
       $forall Posting { paccount = acc, pamount = amt } <- tpostings torig

hledger-web/templates/register.hamlet

@@ -30,7 +30,7 @@
               <a href="@?{acctlink acc}##{tindex torig}" title="#{acc}">
                 #{summName}</a>#{comma}
           <td .amount style="text-align:right; white-space:nowrap;">
-            $if not split || not (isZeroMixedAmount amt)
+            $if not split || not (mixedAmountLooksZero amt)
               ^{mixedAmountAsHtml amt}
           <td style="text-align:right;">
             ^{mixedAmountAsHtml bal}