MavXtrender

Converted the B-Xtrender script from Puppytherapy into a strategy script.

B-Xtrender was created by Bharat Jhunjhunwal and published in this IFTA Journal.

I've added the following features:

• Ability to use factors instead of individual values for each parameter. This will allow you to quickly check different averages (5 vs 7 for example).
  
• Defaults adjusted for crypto trading (7 days/week).
  
• Switches to use either the short or long term indicator, or both.
  
• Time window