Maintenance: Change API-Token fields to type password.

app/assets/javascripts/app/views/integration/github.jst.eco

@@ -13,7 +13,7 @@
           <td class="settings-list-control-cell"><input type="text" class="form-control form-control--small" value="<%= @config.endpoint %>" placeholder="https://api.github.com/graphql" name="endpoint">
         <tr>
           <td class="settings-list-row-control"><%- @T('API token') %> *
-          <td class="settings-list-control-cell"><input type="text" class="form-control form-control--small" value="<%= @config.api_token %>" name="api_token">
+          <td class="settings-list-control-cell"><input type="password" class="form-control form-control--small" value="<%= @config.api_token %>" name="api_token">
       </tbody>
     </table>
   </div>

app/assets/javascripts/app/views/integration/gitlab.jst.eco

@@ -13,7 +13,7 @@
           <td class="settings-list-control-cell"><input type="text" class="form-control form-control--small" value="<%= @config.endpoint %>" placeholder="https://git.example.com/api/graphql" name="endpoint">
         <tr>
           <td class="settings-list-row-control"><%- @T('API token') %> *
-          <td class="settings-list-control-cell"><input type="text" class="form-control form-control--small" value="<%= @config.api_token %>" name="api_token">
+          <td class="settings-list-control-cell"><input type="password" class="form-control form-control--small" value="<%= @config.api_token %>" name="api_token">
       </tbody>
     </table>
   </div>

app/assets/javascripts/app/views/integration/idoit.jst.eco

@@ -13,7 +13,7 @@
           <td class="settings-list-control-cell"><input type="text" class="form-control form-control--small" value="<%= @config.endpoint %>" placeholder="https://idoit.example.com/i-doit/" name="endpoint">
         <tr>
           <td class="settings-list-row-control"><%- @T('API token') %> *
-          <td class="settings-list-control-cell"><input type="text" class="form-control form-control--small" value="<%= @config.api_token %>" name="api_token">
+          <td class="settings-list-control-cell"><input type="password" class="form-control form-control--small" value="<%= @config.api_token %>" name="api_token">
         <tr>
           <td class="settings-list-row-control"><%- @T('Client ID') %>
           <td class="settings-list-control-cell"><input type="text" class="form-control form-control--small" value="<%= @config.client_id %>" name="client_id">