Experimental Anilist and Kitsu support (#586)

* Tracking tab with anilist support

* Rename MangaSync to Track

* Rename variables and methods to track

* Kitsu implementation

* Variables refactoring

* Travis fix?

.travis.yml

@@ -12,11 +12,21 @@ android:
     - extra-android-support
     - extra-google-google_play_services
 
+  licenses:
+    - android-sdk-license-.+
+    - '.+'
+
 jdk:
   - oraclejdk8
 
 before_script:
-    - chmod +x gradlew
+  - chmod +x gradlew
+
+before_install:
+  - mkdir "$ANDROID_HOME/licenses" || true
+  - echo -e "\n8933bad161af4178b1185d1a37fbf41ea5269c55" > "$ANDROID_HOME/licenses/android-sdk-license"
+  - echo -e "\n84831b9409646a918e30573bab4c9c91346d8abd" > "$ANDROID_HOME/licenses/android-sdk-preview-license"
+
 #Build, and run tests
 script: "./gradlew clean buildStandardDebug"
 sudo: false