Some project fixes

* Fix warnings
 * Fix code style
 * Add newlines at end of files
 * Fix .gitignore
 * .gitignore /.idea/misc.xml
 * .gitignore /.idea/gradle.xml
 * Fix XML style

.gitignore

@@ -1,15 +1,21 @@
 *.iml
-.gradle
+
+.DS_Store
+.externalNativeBuild/
+.cxx/
+
+/.gradle/
 /local.properties
 /.idea/caches
-/.idea/libraries
+/.idea/codeStyles/
+/.idea/gradle.xml
+/.idea/libraries/
+/.idea/misc.xml
+/.idea/modules/
 /.idea/modules.xml
 /.idea/workspace.xml
 /.idea/navEditor.xml
 /.idea/assetWizardSettings.xml
-.DS_Store
-/build
+/build/
 /captures
-.externalNativeBuild
-.cxx
-local.properties
+/local.properties

.idea/gradle.xml

@@ -1,19 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="GradleSettings">
-    <option name="linkedExternalProjectsSettings">
-      <GradleProjectSettings>
-        <option name="testRunner" value="GRADLE" />
-        <option name="distributionType" value="DEFAULT_WRAPPED" />
-        <option name="externalProjectPath" value="$PROJECT_DIR$" />
-        <option name="modules">
-          <set>
-            <option value="$PROJECT_DIR$" />
-            <option value="$PROJECT_DIR$/app" />
-          </set>
-        </option>
-        <option name="resolveModulePerSourceSet" value="false" />
-      </GradleProjectSettings>
-    </option>
-  </component>
-</project>

.idea/misc.xml

@@ -1,9 +0,0 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_11" default="true" project-jdk-name="Android Studio default JDK" project-jdk-type="JavaSDK">
-    <output url="file://$PROJECT_DIR$/build/classes" />
-  </component>
-  <component name="ProjectType">
-    <option name="id" value="Android" />
-  </component>
-</project>

app/build.gradle

@@ -22,22 +22,23 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+
     kotlinOptions {
         jvmTarget = '1.8'
     }
 }
 
 dependencies {
-
     implementation 'androidx.core:core-ktx:1.6.0'
     implementation 'androidx.appcompat:appcompat:1.3.1'
     implementation 'com.google.android.material:material:1.4.0'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.0'
-    testImplementation 'junit:junit:4.+'
+    testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.3'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
 }

app/src/main/AndroidManifest.xml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
     package="com.causa_arcana">
 
     <application
@@ -8,7 +9,8 @@
         android:label="@string/app_name"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
-        android:theme="@style/Theme.CausaArcana">
+        android:theme="@style/Theme.CausaArcana"
+        tools:ignore="AllowBackup">
         <activity
             android:name=".MainActivity"
             android:exported="true">

build.gradle

@@ -4,6 +4,7 @@ buildscript {
         google()
         mavenCentral()
     }
+
     dependencies {
         classpath "com.android.tools.build:gradle:7.0.0"
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.21"

settings.gradle

@@ -3,7 +3,6 @@ dependencyResolutionManagement {
     repositories {
         google()
         mavenCentral()
-        jcenter() // Warning: this repository is going to shut down soon
     }
 }
 rootProject.name = "Causa Arcana"