The names are comprised of: script, layout name, country code.

Co-authored-by: grim <verdastelo9604@hotmail.com>

This new information will avoid showing é on a cyrillic layout and ґ on
a latin layout.

The key enable caps lock immediately. It does nothing if caps lock is
already enabled.

It is not present on the keyboard by default but a place is defined on
every layout, top-right of the shift key. It can be enabled in the
settings.

The icon is from materialdesignicons.com.

These keys are not placed in a particular way, the automatic placement
will do a better job.

Each layouts can chose which key are localized instead of specifying it
globally for each key.

Important keys are no longer removed from layouts if the 'extra_keys'
mechanism is not working properly. This can happen if language tags
specified in method.xml don't match the user's language.

Removed some currency symbols from some layouts. They are all in the Fn
layer.

These keys are harder to hit as the finger might exit the screen before
traveling enough to hit a corner. It might be particularly harder for
people that use a phone case.

Every layouts are changed, the notable changes are:

- The Escape key is in the bottom-right corner of the first key.
  This position looks weird at first but is a lot easier to type.

- The 0 key is on the top-left of the last key on the first row.
  It is not like the other digits.

- The Tab key is on the top-right. This might be hard to re-learn.

- Some layouts had more changes to accomodate these new positions.

Co-authored-by: Raphael <rapha.a.r@gmail.com>

These keys are shown only when Fn is activated, "placeholder" keys are
placed in the layouts.