Fixed most of the dependencies by unit testing.

Refactored TransactionService and StorageService.

res/app/components/stf/storage/storage-service.js

@@ -0,0 +1,48 @@
+var Promise = require('bluebird')
+
+module.exports = function StorageServiceFactory($http, $upload) {
+  var service = {}
+
+  service.storeUrl = function(type, url) {
+    return $http({
+      url: '/api/v1/s/' + type + '/download'
+    , method: 'POST'
+    , data: {
+        url: url
+      }
+    })
+  }
+
+  service.storeFile = function(type, files, options) {
+    var resolver = Promise.defer()
+    var input = options.filter ? files.filter(options.filter) : files
+
+    if (input.length) {
+      $upload.upload({
+          url: '/api/v1/s/' + type
+        , method: 'POST'
+        , file: input
+        })
+        .then(
+          function(value) {
+            resolver.resolve(value)
+          }
+        , function(err) {
+            resolver.reject(err)
+          }
+        , function(progressEvent) {
+            resolver.progress(progressEvent)
+          }
+        )
+    }
+    else {
+      var err = new Error('No input files')
+      err.code = 'no_input_files'
+      resolver.reject(err)
+    }
+
+    return resolver.promise
+  }
+
+  return service
+}