Editor: On-screen keyboard to support multi-line input

Preliminary checks

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Describe the problem requiring a solution

Currently, on-screen keyboard window on mobile/touch devices contains only one-line text input box with limited length, which is useful for short names (savegame, map, hero, castle name etc.). However, this makes entering longer texts, such as event / description / rumor text troublesome since after a couple of words the entered text gets not visible.

Describe the possible solution

Another version of on-screen keyboard with multi-line input box could be implemented in the editor.

Additional info

v1.1.0 on Android 5.1.1