Format all the things (#991)

* Format Javascript and CSS files with `prettier`: `prettier --write 'CTFd/themes/**/*'`
* Format Python with `black`: `black CTFd` & `black tests`
* Travis now uses xenial instead of trusty.

CTFd/users.py

@@ -4,33 +4,35 @@ from CTFd.models import Users
 from CTFd.utils.decorators import authed_only
 from CTFd.utils import config
 from CTFd.utils.user import get_current_user
-from CTFd.utils.decorators.visibility import check_account_visibility, check_score_visibility
+from CTFd.utils.decorators.visibility import (
+    check_account_visibility,
+    check_score_visibility,
+)
 
-users = Blueprint('users', __name__)
+users = Blueprint("users", __name__)
 
 
-@users.route('/users')
+@users.route("/users")
 @check_account_visibility
 def listing():
-    page = abs(request.args.get('page', 1, type=int))
+    page = abs(request.args.get("page", 1, type=int))
     results_per_page = 50
     page_start = results_per_page * (page - 1)
     page_end = results_per_page * (page - 1) + results_per_page
 
     count = Users.query.filter_by(banned=False, hidden=False).count()
-    users = Users.query.filter_by(banned=False, hidden=False).slice(page_start, page_end).all()
-
-    pages = int(count / results_per_page) + (count % results_per_page > 0)
-    return render_template(
-        'users/users.html',
-        users=users,
-        pages=pages,
-        curr_page=page
+    users = (
+        Users.query.filter_by(banned=False, hidden=False)
+        .slice(page_start, page_end)
+        .all()
     )
 
+    pages = int(count / results_per_page) + (count % results_per_page > 0)
+    return render_template("users/users.html", users=users, pages=pages, curr_page=page)
 
-@users.route('/profile')
-@users.route('/user')
+
+@users.route("/profile")
+@users.route("/user")
 @authed_only
 def private():
     user = get_current_user()
@@ -42,19 +44,19 @@ def private():
     score = user.score
 
     return render_template(
-        'users/private.html',
+        "users/private.html",
         solves=solves,
         awards=awards,
         user=user,
         score=score,
         place=place,
-        score_frozen=config.is_scoreboard_frozen()
+        score_frozen=config.is_scoreboard_frozen(),
     )
 
 
-@users.route('/users/<int:user_id>')
+@users.route("/users/<int:user_id>")
 @check_account_visibility
 @check_score_visibility
 def public(user_id):
     user = Users.query.filter_by(id=user_id, banned=False, hidden=False).first_or_404()
-    return render_template('users/public.html', user=user)
+    return render_template("users/public.html", user=user)