Revert "Add common procedures in fpg_base for deadkeys"

This reverts commit ccfd4b2ae0a9dfae0d19ae7ba673118af70c75da.
Revert "Use dead key codes for special accentuated characters"

This reverts commit 5ee5b79db4825a3b2afa03dde72ddbe7e46b3c47.
Revert "Make special characters known by memo component"

This reverts commit d71020bc89474bb98aa49b62b769de2d6b20ca8d.
Revert "Make special characters known by editcombobox"

This reverts commit c7b3cdcd025e2f8cc8db7db0cf01fdacefbe2255.
Revert "Make special characters known by edit components"

This reverts commit bff6c8c3b5071ae28ba3c10cf612c55e893926b4.
Merge branch 'hotfix-2'