Left and right Arrow keys for Jolla keyboard

These changes add left and right arrow keys to your keyboard layouts. When switching to symbol mode, the keys send a Backtab or Tab event instead.

There are also some other small improvements for the English and German keyboard layout, see below for details.

Installation:

1. Make sure to create a backup of /usr/share/maliit/plugins/com/jolla/ first!
2. Copy the files to the same directory (you need to be root to do this). Make sure to store layout files (en.qml and/or de.qml) into the layouts subdirectory.
3. Exit root and run (as nemo): systemctl --user restart maliit-server.service

That's all... have fun :)

Keyboard layout changes:

en.qml

Apart from having arrow keys, the modified English keyboard layout is closer to the layout of a physical QWERTY keyboard.

• Added arrow keys left and right next to the Space key.
• Moved . key to the 3rd row and , key to the 2nd row.
• Addered @ key to the 1st row, just to achieve a staggered layout (similar to physical keyboards)

de.qml

Apart from having arrow keys, the modified German keyboard is very close to the layout of a physical QWERTZ keyboard.

• Added arrow keys left and right next to the Space key.
• Moved . and , keys to the 3rd row.
• Added ß key to the 1st row, which also results in a staggered layout (similar to physical keyboards)
• Also added @ as "accent" of Q, so that holding the Q character allows to write the @ sign without switching to symbol mode.

Known issues:

• The SailfishOS user interface does not (yet?) seem to have proper support for Tab and Backtab, but other apps might have.
• The built-in browser allows tabbing forward through form input fields as expected. However, backtab also sends the focus to the next input field, instead of the previous one.