Bug in multisignature schema validations

[diego-G]

I've found several regressions/bugs related to multisignatures schema validations. Below are the expected use cases:

• keysgroup array:
  • length between 1 and 15
  • sender not included
  • must use + operator not other
• min integer:
  • between 2 and 16
  • always smaller than or equal to keysgroup.length + 1

In order to help to fix the issue, I've identified some bugs listed below but there might be more:

• min should be between 2 and 16 instead of 1 and 16
• Using another operator throws an error
• Erroneous message Invalid multisignature min. Must be less than keysgroup size

We therefore need to revise all the validations and error messages.

[karmacoma]

Closed by: c4eb550