feat(xo-web/xoa): registration panel enhancements (#4104)

Fixes #4043

- Remove useless "Trial" title
- Make the "Start trial" button bigger

packages/xo-web/src/common/intl/messages.js

@@ -1803,7 +1803,6 @@ const messages = {
   // ----- Updates View -----
   updateTitle: 'Updates',
   registration: 'Registration',
-  trial: 'Trial',
   settings: 'Settings',
   proxySettings: 'Proxy settings',
   proxySettingsHostPlaceHolder: 'Host (myproxy.example.org)',

packages/xo-web/src/xo-app/xoa/update/index.js

@@ -405,7 +405,6 @@ const Updates = decorate([
               )}
               {+process.env.XOA_PLAN === 1 && (
                 <div>
-                  <h2>{_('trial')}</h2>
                   {state.isTrialAllowed && (
                     <div>
                       {state.isRegistered ? (
@@ -413,6 +412,7 @@ const Updates = decorate([
                           btnStyle='success'
                           handler={effects.startTrial}
                           icon='trial'
+                          size='large'
                         >
                           {_('trialStartButton')}
                         </ActionButton>