Add proptypes to DeletePassword, ChangePassword and ConfirmWithPassword components

components/settings/password/delete.js

 import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+
 import labels from '../../../i18n/en/settings'
 import { changeEncryptionAndRestartApp } from '../../../db'
 import ConfirmWithPassword from '../shared/confirm-with-password'
@@ -45,4 +47,9 @@ export default class DeletePassword extends Component {
       </SettingsButton>
     )
   }
+}
+
+DeletePassword.propTypes = {
+  onStartDelete: PropTypes.func,
+  onCancelDelete: PropTypes.func
 }
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components/settings/password/update.js

 import React, { Component } from 'react'
+import PropTypes from 'prop-types'
+
 import settings from '../../../i18n/en/settings'
 import EnterNewPassword from './enter-new-password'
 import SettingsButton from '../shared/settings-button'
@@ -77,4 +79,9 @@ export default class ChangePassword extends Component {
       </SettingsButton>
     )
   }
+}
+
+ChangePassword.propTypes = {
+  onStartChange: PropTypes.func,
+  onCancelChange: PropTypes.func
 }
\ No newline at end of file

components/settings/shared/confirm-with-password.js

 import React, { Component } from 'react'
+import PropTypes from 'prop-types'
 import { View, Alert } from 'react-native'
 
 import nodejs from 'nodejs-mobile-react-native'
@@ -99,4 +100,9 @@ export default class ConfirmWithPassword extends Component {
     )
 
   }
+}
+
+ConfirmWithPassword.propTypes = {
+  onSuccess: PropTypes.func,
+  onCancel: PropTypes.func
 }
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