[FIX] mail: partner invite dialog

Correctly send a notification on people invite
Also remove useless less rule

addons/mail/static/src/js/mail_chat_backend.js

@@ -357,13 +357,10 @@ var PartnerInviteDialog = Dialog.extend({
         var self = this;
         var data = this.$partner_invite_input.select2('data');
         if(data.length >= 1){
-            this.ChannelModel.call('channel_invite', [], {"ids" : [this.channel.id], 'partner_ids': _.pluck(data, 'id')}).then(function(){
+            return this.ChannelModel.call('channel_invite', [], {"ids" : [this.channel.id], 'partner_ids': _.pluck(data, 'id')}).then(function(){
                 var names = _.pluck(data, 'text').join(', ');
                 self.do_notify(_t('New people'), _.str.sprintf(_t('You added <b>%s</b> to the conversation.'), names));
-                self.close();
             });
-        }else{
-            self.close();
         }
     },
 });
@@ -562,7 +559,7 @@ var ChatMailThread = Widget.extend(mail_thread.MailThreadMixin, ControlPanelMixi
     },
     on_click_button_invite: function(){
         new PartnerInviteDialog(this, {
-            title: _.str.sprintf(_t('Invite people to %s.'), this.get_current_channel_name()),
+            title: _.str.sprintf(_t('Invite people to %s'), this.get_current_channel_name()),
             channel: this.channels[this.get('current_channel_id')],
         }).open();
     },

addons/mail/static/src/less/mail_chat_backend.less

@@ -126,10 +126,3 @@
         }
     }
 }
-
-// ------------------------------------------------------------------
-// Other components
-// ------------------------------------------------------------------
-.o_mail_chat_partner_invite{
-    height: 50px;
-}

addons/mail/static/src/xml/mail_chat_backend.xml

@@ -22,7 +22,7 @@
 
     <!-- PartnerInviteDialog : content of the dialog -->
     <t t-name="mail.chat.PartnerInviteDialog">
-        <div class="o_mail_chat_partner_invite">
+        <div>
             <input type="text" class="o_mail_chat_partner_invite_input" id="mail_search_partners"/>
         </div>
     </t>