Added an application suffix to distinguish between release and debug ver (#177)

* Added an application suffix to distinguish between release and debug ver

* Added icon for debug version.

* Added icon from mattermost assets channel.

app/build.gradle

@@ -27,6 +27,9 @@ android {
             minifyEnabled false
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
+        debug {
+            applicationIdSuffix ".debug"
+        }
     }
     externalNativeBuild {
         cmake {

app/src/debug/res/values/strings.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name" translatable="false">monerujo - Debug</string>
+</resources>

app/src/main/java/com/m2049r/xmrwallet/LoginFragment.java

@@ -333,7 +333,7 @@ public class LoginFragment extends Fragment implements WalletInfoAdapter.OnInter
         super.onCreateOptionsMenu(menu, inflater);
     }
 
-    boolean testnet = false;
+    private boolean testnet = BuildConfig.DEBUG;
 
     boolean isTestnet() {
         return testnet;