remove ravenui.py by using plugin registry instead

tabs.py

@@ -2,11 +2,8 @@ from typing import Optional
 
 from PySide6.QtWidgets import QWidget, QTabWidget, QVBoxLayout
 
-from bigtext import BigText
-from fulltabwidget import FullTabWidget
-from logFileModel import LogFileModel
+from raven.pluginregistry import PluginRegistry
 from raven.plugins.ravenlog.Tab import Tab
-from ravenui import RavenUI
 from settings import Settings
 
 
@@ -41,11 +38,11 @@ class Tabs(QWidget):
     def _current_tab_changed(self, tab_index: int):
         tab: Tab = self.tabs.widget(tab_index)
         if tab:
-            RavenUI.update_window_title(tab.title)
-            RavenUI.update_status_bar(tab.get_status_text())
+            PluginRegistry.execute("update_window_title", tab.title)
+            PluginRegistry.execute("update_status_bar", tab.get_status_text())
         else:
-            RavenUI.update_window_title("")
-            RavenUI.update_status_bar("")
+            PluginRegistry.execute("update_window_title", "")
+            PluginRegistry.execute("update_status_bar", "")
 
     def _close_tab(self, tab_index: int):
         full_tab: Tab = self.tabs.widget(tab_index)