S allius/issue397 (#405)

* add Dashboards log handler to all known loggers

* add list of last 3 warnings/errors to page

* add note list to page

* create LogHandler for the dashboard

- simple memory log handler which stores the last
  64 warnings/errors for the dashboard

* render warnings/errors as note list

* add page for warnings and errors

* fix double defined build target

* add well done message if no errors in the logs

* translate page titles

* more translations

* add Notes page and table for important messages

* add unit tests

app/src/web/conn_table.py

@@ -4,6 +4,7 @@ from quart_babel import format_datetime, _
 from infos import Infos
 
 from . import web
+from .log_handler import LogHandler
 
 
 def _get_device_icon(client_mode: bool):
@@ -79,5 +80,8 @@ async def data_fetch():
     data["conn-table"] = await render_template('templ_table.html.j2',
                                                table=get_table_data())
 
-    data["notes-list"] = await render_template('templ_notes_list.html.j2')
+    data["notes-list"] = await render_template(
+        'templ_notes_list.html.j2',
+        notes=LogHandler().get_buffer(3),
+        hide_if_empty=True)
     return data