Next fix fps template owner

[denciu]

Description

FixedPriceSaleTemplate was setting templateManager as owner of FixedPriceSale due to mistake in passing calldata. This has been fixed to tokenSupplier.

Closes #127

How Has This Been Tested?

Unit tests

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [ ] I have updated the documentation accordingly.
• [ ] I have read the CONTRIBUTING document.
• [x] I have added tests to cover my changes.
• [x] All new and existing tests passed.