Remove data/_theme.scss from git history

- Remove data/_theme.scss from git history, to prevent accidental overwrites/commits
- Add a step to the configuration wizard to create a blank file if one doesn't exist
- Move the file existence check in compile-scss to before favicon building (as it errors if the file is missing)

Fixes https://todo.sr.ht/~tsileo/microblog.pub/67

data/_theme.scss

@@ -1 +0,0 @@
-// override vars for theming here

scripts/config_wizard.py

@@ -25,6 +25,10 @@ def _(event):
 
 
 def main() -> None:
+    theme_file = Path("data/_theme.scss")
+    if not theme_file.exists():
+        theme_file.write_text("// override vars for theming here")
+
     print("Welcome to microblog.pub setup wizard\n")
     print("Generating key...")
     if _KEY_PATH.exists():

tasks.py

@@ -46,16 +46,16 @@ def compile_scss(ctx, watch=False):
     # type: (Context, bool) -> None
     from app.utils.favicon import build_favicon
 
+    theme_file = Path("data/_theme.scss")
+    if not theme_file.exists():
+        theme_file.write_text("// override vars for theming here")
+
     favicon_file = Path("data/favicon.ico")
     if not favicon_file.exists():
         build_favicon()
     else:
         shutil.copy2(favicon_file, "app/static/favicon.ico")
 
-    theme_file = Path("data/_theme.scss")
-    if not theme_file.exists():
-        theme_file.write_text("// override vars for theming here")
-
     if watch:
         run("boussole watch", echo=True)
     else: