Logging Extension for MultiScraper Pro

This extension adds functionality to Multiscraper Pro that allows it to log its operations while scraping from markets. This is useful in providing general information on what Multiscraper Pro is up to at any given time and for debugging. 

The data is exclusively logged in the 'multiscraper_log' table in the database and includes such information as the currently processed task and product id, the task market name, and log datetime. 

As far as markets go, this extension is compatible and will provide logging functionality for any market you may be using.

Further functionality (advanced-faults) is provided for aliexpress as follows:

The extension can identify various fetching problems such as May_Be_Obsolete, Zero_Length, Item_Not_Found, Anti_Spider, Enter_Captcha, and other ABNORMAL results.
Depending on your aliexpress settings, Multiscraper can be forced into a stall condition so that no more tasks are executed until the problem is resolved. To aid debugging, the result of HTML scraping is recorded as well as the complete HTML code whenever one of the above problems is identified.

Some additional checks are put into place to avoid marking products as obsolete by market errors. Products which are reported as not found by the market are not immediately disabled or deleted from our tasks. Instead they are allowed to be rechecked a couple of times depending on our settings before they are removed. For this reason, the market health is also checked so as to avoid removing perfectly fine products which are mistakenly reported as not found by the market.

All settings are optimized out of the box and the extension should work straight away for any market. Just bear in mind that advanced-faults functionality is only provided for aliexpress.