rework logging, add more dataclasses, reworked config

src/backend/db.py

@@ -74,16 +74,12 @@ CREATE_TABLE_SUBJECTS = """CREATE TABLE subjects (
     id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
     name TEXT NOT NULL UNIQUE
 )"""
-CREATE_ELSA_PROF_TABLE = """CREATE TABLE elsa_prof (
-    id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
-    fullname TEXT NOT NULL UNIQUE
-  )"""
+
 CREATE_ELSA_TABLE = """CREATE TABLE elsa (
     id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,
     date TEXT NOT NULL,
     semester TEXT NOT NULL,
-    prof_id INTEGER NOT NULL,
-    FOREIGN KEY (prof_id) REFERENCES elsa_prof (id)
+    prof_id INTEGER NOT NULL
   )"""
 CREATE_ELSA_FILES_TABLE = """CREATE TABLE elsa_files (
     id INTEGER PRIMARY KEY AUTOINCREMENT NOT NULL,