For #738

File was missing in fix by ADDCreative
Update error_log.php

Was producing error when applying filesize() before file_exists()
Typo
removed allow downloads
added mysqli option to the install
Merge pull request #866 from polyetilen/patch-2

Typo
Update modification.php
Update modification.php
Update modification_form.tpl
more checkout work done
huty
checkout now fully working with bootstrap
added more integration code for the front end and bootstrap 3
Merge pull request #874 from helgvor-stoll/master

Extensions > Modifications: Version is missing
fixed some of the issue people have posted.
Merge pull request #805 from gob33/patch-1

For #738
Merge pull request #811 from gob33/patch-2

Update error_log.php
more fixes from github issue list
Update usps.php

Updated filters to strip out reg and trademarks for USPS WebTools API v1.1 (released Jul. 28th, 2013).
Minor update in the admin breadcrumb

Update the height of the greater-than sign in order to fit it in the breadcrumb (There was one pixel less between the sign and the breadcrumb height)
Merge pull request #876 from morae/patch-1

Update string filters in usps.php for v1.1 of USPS WebTools API