Change app id and name for dev build

By making it possible to install it together with the released app
it becomes easier to switch between them.

.travis.yml

@@ -14,14 +14,22 @@ branches:
     - travis-dev-build
 
 before_script:
-  - sed -i -re 's/(versionName ".*)"/\1-dev_'${TRAVIS_COMMIT:0:8}'"/' android_app/app/build.gradle
+  - sed -i -r
+    -e 's/applicationId "[^"]+/\0.dev/'
+    -e 's/(versionCode ).*/\1'$(date +%s)'/'
+    -e 's/versionName "[^"]+/\0-dev_'${TRAVIS_COMMIT:0:8}'/'
+    android_app/app/build.gradle
+  - sed -i -r
+    -e 's/(<string name="app_name">[^<]+)/\1 (dev)/'
+    android_app/app/src/main/res/values*/strings.xml
 
 script: cd android_app && ./gradlew testDebug assembleDebug
 
 before_deploy:
   - ln -s app/build/outputs/apk/debug/app-debug.apk openScale-dev-build.apk
   - git tag -f travis-dev-build
-  - git remote add gh https://${TRAVIS_REPO_SLUG%/*}:${GITHUB_API_KEY}@github.com/${TRAVIS_REPO_SLUG}.git
+  - git remote add gh
+    https://${TRAVIS_REPO_SLUG%/*}:${GITHUB_API_KEY}@github.com/${TRAVIS_REPO_SLUG}.git
   - git push -f gh travis-dev-build
   - git remote remove gh
 
@@ -31,7 +39,8 @@ deploy:
   file: openScale-dev-build.apk
   skip_cleanup: true
   name: openScale development build
-  body: Automatic openScale development build of $TRAVIS_BRANCH ($TRAVIS_COMMIT) built by Travis CI on $(date +'%F %T %Z').
+  body: Automatic openScale development build of $TRAVIS_BRANCH
+    ($TRAVIS_COMMIT) built by Travis CI on $(date +'%F %T %Z').
   prerelease: true
   overwrite: true
   target_commitish: $TRAVIS_COMMIT