Use the new TextButton feature better for current setting
and make clear in the sub text which wallet this is for.
On the send tab the InstaPayConfigButton is directly next to the
default wallet, as such it may be assumed that the insta pay
text applied to the name mentioned there.
This lists the wallet here in order to make things clear and
now lists the actual limit on the right side for consistency.
The CPP now does more of the (heavy) lifting and the UI layer can
ignore
most of the details with regards to there being digits behind the
separator for fiat at all.
The internal change is that the fiat based values are always processed
in cents, even if the cents are not displayed. This solves incorrect
display and generally removes special cases.
tomFlowee