Fix for admin installation validation

It should actually work now.
Updated product form validation to match error

Error text also updated to make limits clearer for user
Minor grammar correction
Closes #28 affiliate website not saved
Closes #34 Google Talk discontinued

Replaced with a generic "Live Chat" module.  Filenames remain
google_talk.* to keep compatible with non-English language files.
Closes #38 Remove JavaScript examples
Fix Klama fee in order editing

https://github.com/opencart/opencart/pull/644
Closes #36 Fix inactive products in order editor
Update products report total calculation

https://github.com/opencart/opencart/pull/909
Added 404 response for missing pages

Applies to category, manufacturer, product, and information pages.

https://github.com/opencart/opencart/issues/920
Add check customer email in admin contact

https://github.com/opencart/opencart/issues/773

https://github.com/opencart/opencart/commit/08439b0598226d6dbbad35deac9006ad65d22069#diff-0
Minor whitespace cleanup
Spelling correction for FedEx shipping options