* Beginnings of integration with Wikipedia client library. (#2642)
* Remove remaining unnecessary API version check.
* Roll up sleeves.
* Add and integrate the beginnings of app adapter.
* Remove vestigial event logging logic.
Event logging is no longer used in this app.
* Beginnings: remove StringUtils and associated redundancies.
* Remove redundant capitalize() method.
* Remove redundant urlEncode() method.
* Remove redundant (and incomplete) language lists.
* Remove redundant usages of SimpleDateFormat.
* Remove redundant json type adapter.
* Remove redundant MW error model classes.
* Rip out redundant MW model classes.
* Pass SessionManager into AppAdapter instead of injecting.
* Wire up more of the AppAdapter.
* Remove redundant Gson initialization and type adapters.
* Rip out PageTitle.
This was being used in some slightly incorrect/unexpected ways.
* Don't need static WikiSite.
* Bump data client library version
* Bump library version and fix build
* Fix tests
* Fix build
* Fix media of the day
* With fixes in recently modified APIs
* replaced icafe with metadata extractor
* replaced icafe with metadata extractor
* removed icafe from gradle
* removed icafe from gradle
* Revert: travis commented code
* Use original content URI
* merged pr
* commit after merge
* modified unit tests
* Use easy image for image picker
* Do not use harcoded mime type
* Use uploadable file for image uploads
* Add picker files in filepicker module
* Remove redundant checks for file
* Make usage of file extensions consistent
* Add javadocs
* Fix tests
* Enable image upload using bookmark activity
* Fix multiple uploads
* Fix external image uploads
* Fix chooser intents
* Fix image quality checks
* Segregate internal and external upload intents
* Invoke all error messages from one place
* Minor changes
* Fix tests
* Add image processing service tests
