[ticket/9725] Create an Azure SQL compatible Schema

Two problems were encountered when installing on AzureSQL:
-Azure SQL does not support the ON clause of T-SQL
-Azure SQL requries a clustered index AKA primary key on all tables

The fix is makeshift; it introduces questionable primary indices, which should be replaced with auto--increment columns.

PHPBB3-9725
[ticket/9725] Add dummy indexes for Azure

SQL Azure requires a primary AKA clustered key on every table.
This adds a dummy INT column to act as key,
avoiding possible duplicate entries.
so that these columns can support bigger (speak: huge) tables

PHPBB3-9725
[ticket/11336] Changes "leaders"-mode to "team"-mode and so in test-file

PHPBB3-11336
[ticket/11336] Changes language variabel LOGIN_EXPLAIN_LEADERS to _TEAM

PHPBB3-11336
[ticket/11336] Adds redirect for old "leaders" mode

PHPBB3-11336
[ticket/11336] Adds 301 info to redirect

PHPBB3-11336
[ticket/12314] Workaround HHVM SPL autoloader sometimes using leading backslash

PHPBB3-12314
[ticket/12317] Do not repeat SQL query in notification_submit_post_base.

PHPBB3-12317
[ticket/12317] Fix notification tests for DBMSes returning integers as int.

PHPBB3-12317
[ticket/12317] Cast string to int to refix DBMSes not using int for integers.

PHPBB3-12317
[ticket/9725] Fetch Azure db stats from proper table

PHPBB3-9725
[ticket/9725] Remove explicit filegroup designations

PHPBB3-9725
[ticket/9725] Create MSSQL primary keys if none exist

PHPBB3-9725
[ticket/9725] Remove trailing spaces from MSSQL schema

PHPBB3-9725
[ticket/9725] Move primary key creation to the correct location

PHPBB3-9725
[ticket/9725] Do not use deprecated views to remove default constraints

PHPBB3-9725
[ticket/9725] Code sniffer fixes

PHPBB3-9725
Merge remote-tracking branch 'crizz0/ticket/11336' into develop-ascraeus

* crizz0/ticket/11336:
  [ticket/11336] Adds 301 info to redirect
  [ticket/11336] Adds redirect for old "leaders" mode
  [ticket/11336] Changes language variabel LOGIN_EXPLAIN_LEADERS to _TEAM
  [ticket/11336] Changes "leaders"-mode to "team"-mode and so in test-file
Merge pull request #2194 from bantu/ticket/12317

[ticket/12317] Fix notification tests for DBMS drivers using int for integers ;-)
Merge pull request #2192 from bantu/ticket/12314

[ticket/12314] Workaround HHVM SPL autoloader sometimes using leading ba...