Merge branch 'gradle-changes' into 'master'

Lint updates, update ACRA

This might fix #677, although hard to tell since I cannot reproduce the issue.

See merge request !343

app/build.gradle

@@ -32,7 +32,7 @@ dependencies {
     compile 'commons-io:commons-io:2.5'
     compile 'commons-net:commons-net:3.5'
     compile 'org.openhab.jmdns:jmdns:3.4.2'
-    compile('ch.acra:acra:4.8.5') {
+    compile('ch.acra:acra:4.9.0') {
         exclude module: 'support-v4'
         exclude module: 'support-annotations'
     }
@@ -98,7 +98,7 @@ if (!hasProperty('sourceDeps')) {
             'com.madgag.spongycastle:pkix:6aba9b2210907a3d46dd3dcac782bb3424185290468d102d5207ebdc9796a905',
             'com.madgag.spongycastle:prov:029f26cd6b67c06ffa05702d426d472c141789001bcb15b7262ed86c868e5643',
             'com.madgag.spongycastle:core:9b6b7ac856b91bcda2ede694eccd26cefb0bf0b09b89f13cda05b5da5ff68c6b',
-            'ch.acra:acra:afd5b28934d5166b55f261c85685ad59e8a4ebe9ca1960906afaa8c76d8dc9eb',
+            'ch.acra:acra:98e71bd00a713b9f848abbae4874601533aaf8492bf9b508e14d07f844a53839',
             'io.reactivex:rxjava:2c162afd78eba217cdfee78b60e85d3bfb667db61e12bc95e3cf2ddc5beeadf6',
             'io.reactivex:rxandroid:35c1a90f8c1f499db3c1f3d608e1f191ac8afddb10c02dd91ef04c03a0a4bcda',
         ]
@@ -194,15 +194,8 @@ android {
         // Our translations are crowd-sourced
         disable 'MissingTranslation'
 
-        // We have locale folders like "values-he" and "values-id" as symlinks
-        // since some devices ship deprecated locale codes
-        disable 'LocaleFolder'
-
-        // Like supportsRtl or parentActivityName. They are on purpose.
-        disable 'UnusedAttribute'
-
         // to make CI fail on errors until this is fixed https://github.com/rtyley/spongycastle/issues/7
-        disable 'InvalidPackage'
+        warning 'InvalidPackage'
     }
 
     packagingOptions {

app/src/main/java/org/fdroid/fdroid/CrashReportActivity.java

@@ -13,8 +13,8 @@ public class CrashReportActivity extends BaseCrashReportDialog implements Dialog
     private EditText comment;
 
     @Override
-    protected void onCreate(Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
+    protected void init(Bundle savedInstanceState) {
+        super.init(savedInstanceState);
 
         final AlertDialog dialog = new AlertDialog.Builder(this)
                 .setTitle(R.string.crash_dialog_title)