Moved proguard file back; do not minify library, rely on consumer-proguard rules

Author: ssawchenko

app/sentry.properties renamed to sentry.properties

@@ -27,9 +27,13 @@ android {
     }
 
     buildTypes {
+        debug {
+            debuggable true
+            minifyEnabled false
+        }
         release {
-            minifyEnabled true
-            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+            debuggable false
+            minifyEnabled false
         }
     }
 }