[FIX] mail: nocontent helper discuss (inbox & starred)

Revision on https://github.com/odoo/odoo/commit/a87d761fdbf345ada5dc93e0a686b08a0f5a0417

From the UX/UI changes above, we also changed the style for empty
inbox and starred in Discuss.

There are two issues with the empty boxes message:

    1. The text is not centered at all (one word per line,
       and everything is stuck on the left-side of the screen)
    2. The style is inconsistent with nocontent message on search

In this commit, inbox and starred use the same style as the no_content
message from a search. The style of the nocontent from a search has been
slightly changed to mimick the intended style for inbox and starred:

    - centered text
    - title is in bold 125% font size
    - other text is not in bold, 115% font size.

1 files changed, 2 insertions, 3 deletions

diff --git a/addons/mail/static/tests/discuss_tests.js b/addons/mail/static/tests/discuss_tests.js
index 4338db1cfaf..6990a04efba 100644
--- a/addons/mail/static/tests/discuss_tests.js
+++ b/addons/mail/static/tests/discuss_tests.js
@@ -44,10 +44,9 @@ QUnit.test('basic rendering', function (assert) {
         assert.strictEqual($sidebar.length, 1,
             "should have rendered a sidebar");
 
-        var $nocontent = discuss.$('.o_mail_chat_content');
-        assert.strictEqual($nocontent.length, 1,
+        assert.strictEqual(discuss.$('.o_mail_chat_content').length, 1,
             "should have rendered the content");
-        assert.strictEqual($nocontent.find('.o_mail_no_content').length, 1,
+        assert.strictEqual(discuss.$('.o_mail_no_content').length, 1,
             "should display no content message");
 
         var $inbox = $sidebar.find('.o_mail_chat_channel_item[data-channel-id=channel_inbox]');