libsysprof-ui: improve duration range drawing and sizing

This disables what we draw, but it gives us a better placement for how
to go about drawing within the space.

src/libsysprof-ui/ui/sysprof-capture-view.ui

@@ -115,6 +115,7 @@
                 </child>
                 <child>
                   <object class="SysprofMarksView" id="marks_view">
+                    <property name="zoom-manager">zoom_manager</property>
                     <property name="visible">true</property>
                   </object>
                   <packing>