Fetch translations for travis builds

Author: sfalexrog

.travis.yml

@@ -12,6 +12,9 @@ env:
   - BUILD_ARCH_LIST='x86_64'
   - BUILD_ARCH_LIST='arm64-v8a'
 before_install:
+  - pip install --user transifex-client
+  - printf "[https://www.transifex.com]\nhostname = https://www.transifex.com\npassword = ${TRAVIS_TRANSIFEX_API}\nusername = api\n" > ~/.transifexrc
+  - pushd app/src/main/jni/OpenXcom && tx pull -a && bin/translations_merge.sh && popd
   - openssl enc -d -aes-256-cbc -in private.enc -out private.7z -md sha256 -pass $TRAVIS_PRIVATE_PASS
   - 7z x private.7z > /dev/null
   - yes | ${ANDROID_HOME}/tools/bin/sdkmanager --update