move the log file viewer to its own plugin

We plan to have multiple different types of tabs.

fulltabwidget.py

@@ -5,12 +5,14 @@ from bigtext import BigText
 from filterviewsyncer import FilterViewSyncer
 from filterwidget import FilterWidget
 from logFileModel import LogFileModel
+from raven.plugins.ravenlog.Tab import Tab
+from conversion import humanbytes
 
 
-class FullTabWidget(QWidget):
+class FullTabWidget(Tab):
 
-    def __init__(self, model: LogFileModel):
-        super(FullTabWidget, self).__init__()
+    def __init__(self, model: LogFileModel, unique_id: str, title: str):
+        super(FullTabWidget, self).__init__(unique_id, title)
         self._model = model
         self.file_view = BigText(model)
         self.filter_hit_view = FilterWidget(self._model)
@@ -33,6 +35,13 @@ class FullTabWidget(QWidget):
     def get_file(self) -> str:
         return self.file_view.get_file()
 
+    # overriding abstract method
     def destruct(self):
         self.file_view.destruct()
         self.filter_hit_view.destruct()
+
+    # overriding abstract method
+    def get_status_text(self) -> str:
+        file = self._model.get_file()
+        file_size = humanbytes(self._model.byte_count())
+        return "%s - %s" % (file_size, file)