Synchronize setup.py with check_dependencies

scripts/check_dependencies.py

@@ -100,6 +100,7 @@ OPTIONAL_MODULES = [
     ('pyodbc', '(ODBC support)'),
     ('psycopg2', '(PostgreSQL support)'),
     ('enchant', '(spell checker)'),
+    ('fitz', '(executable-independent PDF support)'),
     ('pysword', '(import SWORD bibles)'),
     ('uno', '(LibreOffice/OpenOffice support)'),
     # development/testing modules

setup.py

@@ -178,6 +178,7 @@ using a computer and a data projector.""",
         'pyobjc-framework-Cocoa; platform_system=="Darwin"',
         'PyQt5 >= 5.12',
         'PyQtWebEngine',
+        'python-vlc',
         'pywin32; platform_system=="Windows"',
         'QtAwesome',
         'requests',