Pull latest mage sdk

Latest sdk has fix for incorrect password length key.
Also show general error alert on signup failure.

Author: newmanw

mage/build.gradle

@@ -89,7 +89,7 @@ dependencies {
     }
 
     //compile project(':sdk') // uncomment me to build locally
-    compile "mil.nga.giat.mage:sdk:5.0.3" // comment me to build locally
+    compile "mil.nga.giat.mage:sdk:5.0.4" // comment me to build locally
     compile "mil.nga.geopackage:geopackage-android:1.1.1"
     compile 'com.android.support:multidex:1.0.1'
     compile 'com.android.support:support-v4:23.1.1'

mage/src/main/java/mil/nga/giat/mage/login/SignupActivity.java

@@ -312,6 +312,12 @@ public void finishAccount(AccountStatus accountStatus) {
 					} else if (errorIndex == 3) {
 						getPasswordEditText().setError(message);
 						getPasswordEditText().requestFocus();
+					} else if (errorIndex == 5) {
+						new AlertDialog.Builder(this)
+							.setTitle("Signup Failed")
+							.setMessage(message)
+							.setPositiveButton(android.R.string.ok, null)
+							.show();
 					}
 				}
 			}