Topic/reqs 490 tips2

Extends curve calibration to include the calibration to Inflation bonds.

Created generator for Capital Indexed Bonds. Added ParSpread in BondCapitalIndexedTransactionDiscountingMethod. Renamed some inflation/issuer calculators for naming consistency.

New examples of curve calibration on bullet and inflation bonds. Example with inflation seasonality and front part of the curve in line with last published  CPIs.