Add floating window for new threads

New threads get a floating window just like new replies have. This only
pops up on the board detail view.

Signed-off-by: Alek Ratzloff <alekratz@gmail.com>

board/forms.py

@@ -22,8 +22,9 @@ class PostForm(ModelForm):
         model = Post
         fields = ["subject", "name", "text", "image"]
 
-    def __init__(self, *args, board, ip, **kwargs):
+    def __init__(self, *args, user, board, ip, **kwargs):
         super(PostForm, self).__init__(*args, **kwargs)
+        self.user = user
         self.instance.board = board
         self.instance.ip = ip
 
@@ -42,10 +43,9 @@ class ReplyForm(PostForm):
         model = Post
         fields = ["name", "text", "bump", "capcode", "image"]
 
-    def __init__(self, *args, user, op, **kwargs):
+    def __init__(self, *args, op, **kwargs):
         super(ReplyForm, self).__init__(*args, **kwargs)
         self.instance.op = op
-        self.user = user
 
     def clean(self):
         super().clean()