sass tidied-up

* seperated one sass file into different stylesheets
* prefer-pinyin removed
* rewrite .result for a better structure
* layout comments added
_theme.scss init
* comments added for _theme.scss

* layout blocks classified
* layout enhancement for single-explanation entry

* fixed star-btn
optimised for 辨似
optimised for multiple-line .mandarin

see entry, #: 人會算，天會斷
* Meta keywords and description adjustments.
Merge branch 'master' of github.com:audreyt/moedict-webkit
Merge branch 'master' into sass-tidied

Conflicts:
	sass/styles.scss
	styles.css
* ui-tooltip regional adjustments
Merge pull request #108 from audreyt/sass-tidied

sass tidied-up