[IMP] project: improve user experience

This commit brings some user experience improvement:
- Add a line break between the content of the email and the
  'this customer survey has been sent...' indication in mail template
- Move the project_ids field out of the debug mode

task-2792027

closes odoo/odoo#92048

Related: odoo/upgrade#3579
Related: odoo/enterprise#27655
Signed-off-by: Laurent Stukkens (ltu) <ltu@odoo.com>

addons/project/data/mail_template_data.xml

@@ -84,7 +84,7 @@
         <tr><td valign="top" style="font-size: 13px;">
             We appreciate your feedback. It helps us to improve continuously.
             <t t-if="object.project_id.rating_status == 'stage'">
-                <br/><span style="margin: 0px 0px 0px 0px; font-size: 12px; opacity: 0.5; color: #454748;">This customer survey has been sent because your task has been moved to the stage <b t-out="object.stage_id.name or ''">In progress</b></span>
+                <br/><br/><span style="margin: 0px 0px 0px 0px; font-size: 12px; opacity: 0.5; color: #454748;">This customer survey has been sent because your task has been moved to the stage <b t-out="object.stage_id.name or ''">In progress</b></span>
             </t>
             <t t-if="object.project_id.rating_status == 'periodic'">
                 <br/><span style="margin: 0px 0px 0px 0px; font-size: 12px; opacity: 0.5; color: #454748;">This customer survey is sent <b t-out="object.project_id.rating_status_period or ''">Weekly</b> as long as the task is in the <b t-out="object.stage_id.name or ''">In progress</b> stage.</span>

addons/project/views/project_views.xml

@@ -243,7 +243,7 @@
                             </group>
                             <group>
                                 <field name="fold"/>
-                                <field name="project_ids" widget="many2many_tags" options="{'color_field': 'color'}" groups="base.group_no_one"/>
+                                <field name="project_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
                             </group>
                         </group>
                         <group string="Stage Description and Tooltips">