Mortgage repayment calculator

A very simple mortgage repayment calculator. This release fixes some issues with entering commas into one of the text boxes, and also ensures that the amortization datagridview takes up all the available tab space on load.

Do not base serious financial decisions on this app, it is reasonably accurate, but I take no responsibility for any financial aharm done through basing decisions on its output. Use it for what it's purpose is, to give you a reasonable guess at how long it will take to pay a mortgage off, should you change your (fixed rate) interest amount, or the amount you pay weekly, fortnightly or monthly.

I hope it's useful to somebody.