apps: rework portBindings

ports is REST API input . Map of env var to the host port
portBinding is the database structure. Map of env var to host port, count, type etc

also, rename portCount -> count in various places to keep things consistent

dashboard/src/js/client.js

@@ -957,7 +957,7 @@ angular.module('Application').service('Client', ['$http', '$interval', '$timeout
             subdomain: config.subdomain,
             domain: config.domain,
             secondaryDomains: config.secondaryDomains,
-            portBindings: config.portBindings,
+            ports: config.ports,
             accessRestriction: config.accessRestriction,
             cert: config.cert,
             key: config.key,
@@ -979,7 +979,7 @@ angular.module('Application').service('Client', ['$http', '$interval', '$timeout
             subdomain: config.subdomain,
             domain: config.domain,
             secondaryDomains: config.secondaryDomains,
-            portBindings: config.portBindings,
+            ports: config.ports,
             backupId: config.backupId,
             overwriteDns: !!config.overwriteDns
         };