Add missing character combinations for international layouts

Czech: add missing capslock for numbers and shift+ralt
mappings.
Slovak: fix wrong ralt mappings, add missing ralt mappings
and fixed wrong PLUS key character.
US intl: add missing capslock+ralt support.
Swiss French and Swiss German: add missing ralt mapping for key
numbers 4 and 5, and add missing capslock and capslock+
shift for SEMICOLON and APOSTROPHE.

Change-Id: I02c94bf13d5268d5d1e648c96b7251cb7564f233
Signed-off-by: Olivier Gay <ogay@logitech.com>
Signed-off-by: Manuel Carthoblaz <mcarthob@logitech.com>
Signed-off-by: Mathieu Meisser <mmeisser@logitech.com>