[ticket/10854] sql server drop default constraint when dropping column

drops default columns with T-SQL before attempting drop column to
avoids sql exception.  This is a huge annoyance in UMIL scripts running
under sql server.
[ticket/10949] Converted AJAX coding standards to new guidelines.

Basically, moved parentheses to same line and changed variable names to
camel case.

PHPBB3-10949
[ticket/10431] CSS3 buttons

CSS3 replacements for big buttons

PHPBB3-10431
[ticket/10431] Different font for iOS

Different font for buttons on iOS devices because Verdana looks
incorrectly aligned in Safari/iOS. Also slightly changed text shadow.

PHPBB3-10431
[ticket/10431] Adjustments for IE7

Adjustments to buttons for IE7

PHPBB3-10431
[ticket/10431] Changed fonts for Linux

Added backup fonts for Linux systems that do not have Verdana font

PHPBB3-10431
[ticket/11171] DB additions for these changes

Made the required changes to develop/create_schema_files.php
and this is what resulted of that.

PHPBB3-11171
[ticket/11171] DB changes for the update

These are the changes to database_update.php required for
this ticket.

PHPBB3-11171
[ticket/11171] Use the options stored to decide how to show it

Added what's needed so that the post in the report is parsed the
same way as it was being parsed when the post was reported

PHPBB3-11171
[ticket/11171] Adapted the code in report.php

Added the variable aliases needed (to look and feel the same as
it was before)
Added the variables into  the table insert.

PHPBB3-11171
[ticket/11171] Cleanup of leftovers

I didn't notice that there were actually leftovers from the other
PR. Anyway, this will remove all the leftovers I noticed from the
other PR.

PHPBB3-11171
[ticket/11171] Moved the DB schema changes to its place

Moved the db changes schema to the place where all the other
schema changes are.

PHPBB3-11171
[ticket/11248] Convert line endings to LF - develop edition.

PHPBB3-11248
[ticket/11259] Make phpbb_admin_path available everywhere

PHPBB3-11259
[ticket/11259] Also make adm_relative_path available in the container

PHPBB3-11259
[ticket/11259] adm_relative_path -> phpbb_adm_relative_path

We can assume they properly format their config settings, right?

PHPBB3-11259
[ticket/11259] htmlspecialchars($phpbb_admin_path)

PHPBB3-11259
[ticket/10954] Mark forums read without popup or page refresh

PHPBB3-10954
[ticket/10954] Mark topics read without popup

Also added missing handling of locked forums.

PHPBB3-10954
[ticket/10954] Modify is_ajax check for consistency

PHPBB3-10954