Handle base change
I explained the problem on the forum : https://forum.duniter.org/t/bug-daffichage-des-montants/5966
While paying (on GTest), Cesium accepts an amount with two decimals, but rounds it to one decimal (ex. 100.26 GT becomes 100.30).
The DU amount is in the right base on the block screen : https://g1-test.duniter.fr/#/app/block/351970/000083C51F2152D988D76B71FF76584AA935AE5C911C1F4CBED8F3B316F129E6 (52.49 GT), but on the "transaction" screen, it shows 524.90 GT.
This problem deals with the change of base unit.