Nikita Yaschenko (2538), Aydar Gizatullun (2539), Amir Muratov (2539)

- My (@Nafanya) part: all UI
- Aydar's (@lightning95) part: translation via Yandex API
- Amir's (@AmirMuratov) part: search and load images via Flickr search API

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* LruCache used to cache loaded images