Update JS7 PowerShell module for later 2.5 and 2.6 releases

Current Situation

• A number of incompatible changes have been introduced to the JS7 REST Web Service that are not reflected by the JS7 PowerShell Module.
• This affects later JS7 releases and particularly calls to /daily_plan/orders from the Get-JS7DailyPlanOrder cmdlet.

Desired Behavior

• Update the JS7 PowerShell module for compatibility with latest JS7 releases.