File component to store and read files from external storage

Change-Id: I32e344983285f7d589cd6cec183366b56fc76a22
Update documentation for split blocks.

Change dropdown order for split blocks. Make dropdown change name of
second arg to indicate when input must be a list. Adjust block mode on
reading the XML

Change-Id: Ia93b0c10733502153730ceb7fec798470df77f09
Adds conditionals for list picker and web viewer activities in Manifest

Change-Id: I55ded4ee436da4ea775c3287dbd29ea20b3ead83
Component that wraps the Yandex.Translator service.

Component that wraps the Yandex.Translator service to provide
translations between different languages

Change-Id: If6f435e9d48aaa9d45a18d0fb37320b759123362
Button Enhancements

Added TouchUp and TouchDown events.
FontSize, FontBold, FontItalic properties made visible in blocks editor.

Change-Id: Ia308344c0c660e70f777d035555f77e698d018f6
Fix minor typos in documentation for YandexTranslate

Change-Id: I6e47f1a7ba9d871249dcdb09524f9c0ff5e1227c
Update Companion Version number to 2.18ai2

Change-Id: I671b7f022cf61b156834bb52eef6dce989a3cead
merged in upstream