[ticket/10050] adding .topicrow to template condition

PHPBB3-10050
[ticket/10050] removing prosilver edits

PHPBB3-10050
[ticket/11233] prohibit selecting anonymous user as a PM recipient

While composing pm, it should not be allowed to add
anonymous user as a PM recipient

PHPBB3-11233
Merge remote-tracking branch 'remotes/Senky/ticket/10050' into develop-olympus

# By Senky
# Via Senky
* remotes/Senky/ticket/10050:
  [ticket/10050] removing prosilver edits
  [ticket/10050] adding .topicrow to template condition
Merge remote-tracking branch 'dhruvgoel92/ticket/11233' into develop-olympus

* dhruvgoel92/ticket/11233:
  [ticket/11233] prohibit selecting anonymous user as a PM recipient
[ticket/11220] Improvement to the info pop-up from "list="

A improvement to the info popup which is displayed when the cursor
is over the bbcode-button [list=] in the posting-editor

PHPBB3-11220
Merge remote-tracking branch 'Crizz0/ticket/11220' into develop-olympus

* Crizz0/ticket/11220:
  [ticket/11220] Improvement to the info pop-up from "list="
[ticket/11196] Changed 401 response message in session.php.

In session.php 401 response message was "Not Authorized".
I changed it to "Unauthorized".

PHPBB3-11196
Merge branch 'ticket/erangamapa/11196' into develop-olympus

* ticket/erangamapa/11196:
  [ticket/11196] Changed 401 response message in session.php.