diff --git a/commentaries/views.py b/commentaries/views.py
index 9aeb06009d0fae098576982fe65f5b792f700848..a7028b1caa21d53869da760c22b9dd79b0127f9d 100644
--- a/commentaries/views.py
+++ b/commentaries/views.py
@@ -15,6 +15,7 @@ from .forms import *
 
 from comments.models import Comment, AuthorReply
 from comments.forms import CommentForm
+from contributors.forms import AuthenticationForm
 from ratings.forms import CommentRatingForm, AuthorReplyRatingForm, CommentaryRatingForm
 
 ################
@@ -47,7 +48,8 @@ def request_commentary(request):
             form = RequestCommentaryForm()
         return render(request, 'commentaries/request_commentary.html', {'form': form})
     else: # user is not authenticated:
-        return render(request, 'contributors/login.html')
+        form = AuthenticationForm()
+        return render(request, 'contributors/login.html', {'form': form})
 
 def request_commentary_ack(request):
     return render(request, 'commentaries/request_commentary_ack.html')
diff --git a/comments/models.py b/comments/models.py
index 96fa7c120c5af8e94ab4556eb5609d7dbd96d9b4..b9d11fbe4ba3078d7d3522a7d82f50f55c25cb14 100644
--- a/comments/models.py
+++ b/comments/models.py
@@ -27,11 +27,6 @@ COMMENT_CATEGORIES = (
     ('SUG', 'suggestion for further work'),
     )
 
-class CommentCategory(models.Model):
-    category = models.CharField(max_length=3, default='REM')
-
-    def __str__ (self):
-        return self.category
 
 
 class Comment(models.Model):
@@ -47,7 +42,7 @@ class Comment(models.Model):
     submission = models.ForeignKey(Submission, blank=True, null=True)
     in_reply_to = models.ForeignKey('self', blank=True, null=True)
     author = models.ForeignKey(Contributor)
-#    categories = models.ManyToManyField(CommentCategory)
+    # Categories:
     is_rem = models.BooleanField(default=False, verbose_name='remark')
     is_que = models.BooleanField(default=False, verbose_name='question')
     is_ans = models.BooleanField(default=False, verbose_name='answer to question')
@@ -82,6 +77,7 @@ class AuthorReply(models.Model):
     # -1: rejected (unclear)
     # -2: rejected (incorrect)
     # -3: rejected (not useful)
+    # -4: not from author
     status = models.SmallIntegerField(default=0)
     commentary = models.ForeignKey(Commentary, blank=True, null=True)
     submission = models.ForeignKey(Submission, blank=True, null=True)
diff --git a/scipost/static/scipost/SciPost.css b/scipost/static/scipost/SciPost.css
index 597925f4903c85854dfd582f053c0e1a5ce38b62..f99b36964921f6cdcc5db85f913ef958f3569230 100644
--- a/scipost/static/scipost/SciPost.css
+++ b/scipost/static/scipost/SciPost.css
@@ -200,11 +200,17 @@ header h1 {
 }
 header a {
   text-decoration: none;
+//  border: 1px solid white;
 }
 header a:hover {
   color: #ffffff;
 //  text-decoration: underline;
 }
+header img {
+  margin: 0px;
+  padding: 0px;
+//  border: 1px solid white;
+}
 
 nav {
 //  background-color:#cccccc;
diff --git a/scipost/templates/scipost/header.html b/scipost/templates/scipost/header.html
index f0d6a400386b76fa4afd0acdc9609435224c866a..d3e0bb4e64b540c9be1aeed95c295e9be66e59f1 100644
--- a/scipost/templates/scipost/header.html
+++ b/scipost/templates/scipost/header.html
@@ -1,3 +1,4 @@
+{% load staticfiles %}
     <header>
       <div class="row">
 	<div class="col-3">