This adds a setting in the mobile client where the user to select to
prefer to start inputting the BCH value on payments (that require manual
input of price).
The default is to start with the user selected fiat value.
The non-themed import basically is just a proxy using some
auto-detection to find out which theme to use.
As the app only uses the basic theme, this is what we'll import.
We re-introduced a checkbox to enable notifications.
We now have a second type of notification, one for incoming transactions
that may happen when the app isn't in the foreground.
We remove the block notification feature, as that was nice but useless.
This instead introduces a way for a transaction we created to be marked
as needing monitoring and when a block comes in we create a notification
explaining it has been mined.
This is the only useful notification type we have today,
but at least it allows the user to explicitly go and request
notifications from the Android OS.
tomFlowee