Correct last vote handling in poll card

The handling for last vote did not really work in the case
where the walletholder votes multiple times. This commit implements
a sensible and correct version.

src/gridcoin/voting/result.cpp

@@ -1248,7 +1248,11 @@ void PollResult::TallyVote(VoteDetail detail)
 
     if (detail.m_ismine != ISMINE_NO) {
         m_self_voted = true;
-        m_self_vote_detail = detail;
+
+        m_self_vote_detail.m_amount += detail.m_amount;
+        m_self_vote_detail.m_mining_id = detail.m_mining_id;
+        m_self_vote_detail.m_magnitude = detail.m_magnitude;
+        m_self_vote_detail.m_ismine = detail.m_ismine;
     }
 
     for (const auto& response_pair : detail.m_responses) {
@@ -1258,6 +1262,22 @@ void PollResult::TallyVote(VoteDetail detail)
         m_responses[response_offset].m_weight += response_weight;
         m_responses[response_offset].m_votes += 1.0 / detail.m_responses.size();
         m_total_weight += response_weight;
+
+        if (detail.m_ismine != ISMINE_NO) {
+            bool choice_found = false;
+
+            for (auto& choice : m_self_vote_detail.m_responses) {
+                if (choice.first == response_offset) {
+                    choice.second += response_weight;
+                    choice_found = true;
+                    break;
+                }
+            }
+
+            if (!choice_found) {
+                m_self_vote_detail.m_responses.push_back(std::make_pair(response_offset, response_weight));
+            }
+        }
     }
 
     m_votes.emplace_back(std::move(detail));

src/qt/forms/voting/pollcard.ui

@@ -201,14 +201,14 @@
         <item row="2" column="0">
          <widget class="QLabel" name="myLastVoteAnswerTextLabel">
           <property name="text">
-           <string>Your Last Vote:</string>
+           <string>Your Vote(s):</string>
           </property>
          </widget>
         </item>
         <item row="2" column="2">
          <widget class="QLabel" name="myVoteWeightTextLabel">
           <property name="text">
-           <string>Your Vote Weight:</string>
+           <string>Your Vote Weight(s):</string>
           </property>
          </widget>
         </item>

src/qt/voting/pollcard.cpp

@@ -39,6 +39,7 @@ PollCard::PollCard(const PollItem& poll_item, QWidget* parent)
         ui->myPercentAVWLabel->setText("N/A");
     } else {
         QString choices_str;
+        QString weights_str;
 
         int64_t my_total_weight = 0;
 
@@ -49,11 +50,17 @@ PollCard::PollCard(const PollItem& poll_item, QWidget* parent)
                 choices_str = QString(poll_item.m_choices[choice.first].m_label);
             }
 
+            if (!weights_str.isEmpty()) {
+                weights_str += ", " + QString::number(choice.second / COIN);
+            } else {
+                weights_str = QString::number(choice.second / COIN);
+            }
+
             my_total_weight += choice.second / COIN;
         }
 
         ui->myLastVoteAnswerLabel->setText(choices_str);
-        ui->myVoteWeightLabel->setText(QString::number(my_total_weight));
+        ui->myVoteWeightLabel->setText(weights_str);
         if (poll_item.m_active_weight) ui->myPercentAVWLabel->setText(QString::number((double) my_total_weight
                                                                                       / (double) poll_item.m_active_weight
                                                                                       * (double) 100.0, 'f', 4) + '\%');