build: add gradle release configuration

* update key store name
* fix brazilian translation mapping

Tuleap: #124
Change-Id: I705f2fc9cde9115f4e4c1d50e9b9611f38ef86e5

.tx/config

 [main]
 host = https://www.transifex.com
+lang_map = pt_BR:pt-rBR
 
 [ring.android]
 file_filter = ring-android/app/src/main/res/values-<lang>/strings.xml

ring-android/app/build.gradle

@@ -39,4 +39,18 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_7
         targetCompatibility JavaVersion.VERSION_1_7
     }
+    buildTypes {
+        release {
+            minifyEnabled true
+        }
+    }
+    signingConfigs {
+        config {
+            keyAlias 'ring'
+            storeFile file('../keystore.bin')
+        }
+    }
+    lintOptions {
+        disable 'MissingTranslation'
+    }
 }
\ No newline at end of file

ring-android/app/src/main/AndroidManifest.xml

@@ -98,7 +98,6 @@ as that of the covered work.
             android:windowSoftInputMode="adjustPan" >
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>