UI text upgrades (#3375)

* Clarifying auth user join button

* Update team_general_tab.jsx

* Update generated_setting.jsx

* Update public_link_settings.jsx

* Update signup_settings.jsx

* Update login_settings.jsx

* Update team_general_tab.jsx

* Update en.json

* Clarifying help text

* Clarifying help text

webapp/components/admin_console/public_link_settings.jsx

@@ -72,7 +72,7 @@ export default class PublicLinkSettings extends AdminSettings {
                     helpText={
                         <FormattedMessage
                             id='admin.image.publicLinkDescription'
-                            defaultMessage='32-character salt added to signing of public image links. Randomly generated on install. Click "Re-Generate" to create new salt.'
+                            defaultMessage='32-character salt added to signing of public image links. Randomly generated on install. Click "Regenerate" to create new salt.'
                         />
                     }
                     value={this.state.publicLinkSalt}
@@ -81,4 +81,4 @@ export default class PublicLinkSettings extends AdminSettings {
             </SettingsGroup>
         );
     }
-}
+}