Merge pull request #403 from e-piksel/master

Fixed error_desc_limit -> error_limit
more custom field work done
Merge branch 'master' of https://github.com/opencart/opencart
more custom field work done
Maybe not very important but in admin/view/template/design/banner_form.nl on line 122 set width to 800
Fix whitespace, spaces to tabs

This commit has no functional changes, just changes to whitespace and
tabs. This covers all the files inside the system folder.

1. Remove blank lines
2. For consitency, convert spaces to tabs everywhere. Most of the code
is in tabs, but several locations were either just spaces or a mixture.
Remove .ds_store garbage
Merge pull request #407 from Milow/master

Cleanup whitespace in /system/*
Fatal error: Call to undefined function close()