Added Japanese layout, update in Spanish layout

Addition of japanese.js layout and update of comments in spanish.js
Japanese layout added

Japanese layouts added:
japanese-kana and japanese-qwerty
Merge pull request #101 from pacoalcantara/master

Addition of Japanese layout
save autocomplete caret position IE9 - fixes #95
added more layouts to the demo
fixed closing keyboard error - issue #102
Updated navigation extension
Kana keyboard layout flushed

Aligned and flushed keys on japanese-kana keyboard
Merge pull request #104 from pacoalcantara/master

Flushed keys on japanese-kana keyboard
Added iPad demos
Merge branch 'master' of https://github.com/Mottie/Keyboard
updated jquery, jqueryui & removed themeswitcher
fixed space bar definition
added {default} key
prevent combo replace error - see issue #116
added ipad touch events
updated demo
added beforeVisible event
clear hovered state
updated autocomplete for jQuery UI 1.9+