Join the tabs in the middle pane
The Clip, Transition, Title tabs in the middle pane should be merged in a single Clip tab.
Some starting point can be found in editorperspective.py
:
self.context_tabs = BaseTabs(self.app)
self.clipconfig = ClipProperties(self.app)
self.trans_list = TransitionsListWidget(self.app)
self.title_editor = TitleEditor(self.app)
self.context_tabs.append_page("Clip",
self.clipconfig, Gtk.Label(label=_("Clip")))
self.context_tabs.append_page("Transition",
self.trans_list, Gtk.Label(label=_("Transition")))
self.context_tabs.append_page("Title",
self.title_editor.widget, Gtk.Label(label=_("Title")))