Improve name validation

- The following characters are no longer accepted: \ ` ^ *
- The characters . and 。 are not allowed unless they are directly followed by a space or the end of the string
- Everything's done in a single, hideous regex

Forbid URLs to be inserted into Name fields

Fixed keywords disappear from search index

CO: Update ambiguous code style

Update Changelog and Contributors

Fix filemanager security breaches

Update prestashop version

Check mime type when uploading files (1.6.1.x)

Update ambigous code style

Missing class const on cert refresh

Add a fallback to curl when file_get_content() return an empty response

Hide arguments in debug trace page

Stop sending a copy of the contact message to the "author" (avoid spam)

Fix Module configure permission

Disallow the negative discounts in orders

Removed duplicate expressions

Adding "¤" and "|" to isName()

Catch all Swift exceptions in Mail::Send()

Replace serialize with json_encode