Large refactor for #69

- makefile: Don't refresh deps automatically, causes double build
- storage: Move GetMessage, GetMessages (Mailbox), PurgeMessages to the
  Store API for #69
- storage: Remove Mailbox.Name method for #69
- test: Create new test package for #79
- test: Implement StoreStub, migrate some tests off MockDataStore for
  task #80
- rest & webui: update controllers to use new Store methods

pkg/storage/testing.go

@@ -15,6 +15,24 @@ type MockDataStore struct {
 	mock.Mock
 }
 
+// GetMessage mock function
+func (m *MockDataStore) GetMessage(name, id string) (Message, error) {
+	args := m.Called(name, id)
+	return args.Get(0).(Message), args.Error(1)
+}
+
+// GetMessages mock function
+func (m *MockDataStore) GetMessages(name string) ([]Message, error) {
+	args := m.Called(name)
+	return args.Get(0).([]Message), args.Error(1)
+}
+
+// PurgeMessages mock function
+func (m *MockDataStore) PurgeMessages(name string) error {
+	args := m.Called(name)
+	return args.Error(0)
+}
+
 // MailboxFor mock function
 func (m *MockDataStore) MailboxFor(name string) (Mailbox, error) {
 	args := m.Called(name)
@@ -61,12 +79,6 @@ func (m *MockMailbox) NewMessage() (Message, error) {
 	return args.Get(0).(Message), args.Error(1)
 }
 
-// Name mock function
-func (m *MockMailbox) Name() string {
-	args := m.Called()
-	return args.String(0)
-}
-
 // String mock function
 func (m *MockMailbox) String() string {
 	args := m.Called()