Changelly Support (#267)

* Disable shapeshift and use changelly

* UI to manage changelly payment method

* wip on changelly api

* Add in Vue component for changelly and remove target currency from payment method

* add changelly merhcant id

* Small fixes to get Conversion to load

* wip fixing the component

* fix merge conflict

* fixes to UI

* remove debug, fix fee calc and move changelly to own partials

* Update ChangellyController.cs

* move original vue setup back to checkout

* Update core.js

* Extracting Changelly component to js file

* Proposal for loading spinner

* remove zone

* imrpove changelly ui

* add in changelly config checks

* try new method to calculate amount + remove to currency from list

* abstract changelly lofgic to provider and reduce dependency on js component

* Add UTs for Changelly

* refactor changelly backend

* fix failing UT

* add shitcoin tax

* pr changes

* pr changes

BTCPayServer/wwwroot/checkout/js/core.js

@@ -32,9 +32,6 @@ function changeCurrency(currency) {
 }
 
 function onDataCallback(jsonData) {
-    // extender properties used 
-    jsonData.shapeshiftUrl = "https://shapeshift.io/shifty.html?destination=" + jsonData.btcAddress + "&output=" + jsonData.paymentMethodId + "&amount=" + jsonData.btcDue;
-    //
 
     var newStatus = jsonData.status;