templates: Translate pkgbase.html and partials

+ Include the `is_maintainer` context key.
+ Use `is_maintainer` in more locations.

Signed-off-by: Kevin Morris <kevr@0cost.org>

aurweb/routers/packages.py

@@ -28,6 +28,8 @@ async def package_base(request: Request, package: str):
     context["packages_count"] = package.packages.count()
     context["keywords"] = package.keywords.all()
     context["comments"] = package.comments.all()
+    context["is_maintainer"] = request.user.is_authenticated() \
+        and request.user.Username == package.Maintainer.Username
 
     return render_template(request, "pkgbase.html", context)