* make book admin view sortable.
 * add extension beta.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps
* add template field in block and layout
 * The block can set colors.
* maked block list sortable.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps

Conflicts:
	system/module/block/view/create.html.php
	system/module/block/view/edit.html.php
 * fixed merge.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps
 * Adjust code.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps
 * maked nav admin sortable.
 * Use api for links of help.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps
 * fixed errors in book/admin.js.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps
* add base css style
* use base style at head.html
 * change ext path and js/css path.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps