Utils: Use a full layout row for an aspect for Columns and Forms

Avoids some boilerplate on the user code side.

This seems to be the only existing case. If there'd ever be a case where
this is not appropriate, an extra Row { ... } would solve it.

Change-Id: I1ae1102e895640c0acc03b4949e3baabecfcdc49
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/mercurial/mercurialsettings.cpp

@@ -85,9 +85,7 @@ OptionsPageWidget::OptionsPageWidget(const std::function<void()> &onApply, Mercu
     : m_onApply(onApply), m_settings(settings)
 {
     MercurialSettings &s = *settings;
-
     using namespace Layouting;
-    const Break nl;
 
     Column {
         Group {
@@ -98,7 +96,7 @@ OptionsPageWidget::OptionsPageWidget(const std::function<void()> &onApply, Mercu
         Group {
             Title(tr("User")),
             Form {
-                s.userName, nl,
+                s.userName,
                 s.userEmail
             }
         },