[feature/delete-auto-logins] improves styling

PHPBB3-9647
[feature/delete-auto-logins] fixes style

removes reset button and some minor style fixes in subsilver2 and
prosilver.

PHPBB3-9647
[ticket/10898] Do not write ?> into config.php to avoid whitespace output.

PHPBB3-10898
[ticket/10650] Subject is cleared if no permissions exist

The subject line will be cleared before passing to the template
in case the user doesn't have sufficient permissions.

PHPBB3-10650
[ticket/10890] Fix test_sql_fetchrow_returns_false_when_empty() on MS and ORA.

Fix phpbb_dbal_select_test::test_sql_fetchrow_returns_false_when_empty() on
MSSQL and Oracle by specifying an existing table in the query.

PHPBB3-10890
[ticket/10790] Remove a (kind of) dead code section from submit_pm().

The type of $user->data['user_id'] is (almost) guranteed to be integer
since session::session_create() casts it to integer.
The type of $row['user_id'] is only an integer if the DB driver adjusts the
PHP type according to the DB type. This is only done by some of our
not-so-popular DB drivers and is not the case for MySQL.

As such this comparison is (almost) never true and a PM is also sent to the
author itself when it is sent to a group the author is also a member of.

Since this behaviour seems to have been accepted by the communty, the dead
code is removed and current behaviour is kept.

Also, checking this in the loop seems to be a rather bad idea.

Introduced by 78b1c4caaa17cc8760b685ad41c19f15f9d89b68.

PHPBB3-10790
[ticket/10565] update_forum_tracking_info(): Remove unnecessary GROUP BY clause

PHPBB3-10565
[ticket/10565] Add line breaks to query in order to follow coding guidelines.

PHPBB3-10565
[ticket/10401] Return correct type when ldap_bind() fails in ldap_login().

ldap_login() is supposed to return an array.

PHPBB3-10401
Merge PR #743 branch 'bantu/ticket/10094' into develop-olympus

* bantu/ticket/10094:
  [ticket/10094] Purge acm_file cache before phpBB installation.
Merge PR #743 branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/10094] Purge acm_file cache before phpBB installation.
Merge PR #808 branch 'bantu/ticket/10898' into develop-olympus

* bantu/ticket/10898:
  [ticket/10898] Do not write ?> into config.php to avoid whitespace output.
Merge PR #808 branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/10898] Do not write ?> into config.php to avoid whitespace output.
Merge PR #812 branch 'bantu/ticket/10565' into develop-olympus

* bantu/ticket/10565:
  [ticket/10565] Add line breaks to query in order to follow coding guidelines.
  [ticket/10565] update_forum_tracking_info(): Remove unnecessary GROUP BY clause
Merge PR #812 branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/10565] Add line breaks to query in order to follow coding guidelines.
  [ticket/10565] update_forum_tracking_info(): Remove unnecessary GROUP BY clause
Merge PR #813 branch 'bantu/ticket/10401' into develop-olympus

* bantu/ticket/10401:
  [ticket/10401] Return correct type when ldap_bind() fails in ldap_login().
Merge PR #813 branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/10401] Return correct type when ldap_bind() fails in ldap_login().
[ticket/10828] Connect to postgres database by default.

When not connecting to a specific database, connect to postgres
database which specifically exists as a default database to
connect to.

PHPBB3-10828
Merge PR #810 branch 'bantu/ticket/10890' into develop-olympus

* bantu/ticket/10890:
  [ticket/10890] Fix test_sql_fetchrow_returns_false_when_empty() on MS and ORA.
Merge PR #810 branch 'develop-olympus' into develop

* develop-olympus:
  [ticket/10890] Fix test_sql_fetchrow_returns_false_when_empty() on MS and ORA.