mxuser/yii2-app-basic

Qiang Xue ca8511dd43 fixed functional test.		%!s(int64=12) %!d(string=hai) anos
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assets	949c567387 Fixes #624: renamed www to web.	%!s(int64=12) %!d(string=hai) anos
css	cb30f8d0e7 add sorting icons to gridview sort links in basic and advanced app css	%!s(int64=12) %!d(string=hai) anos
index-test.php	ca8511dd43 fixed functional test.	%!s(int64=12) %!d(string=hai) anos
index.php	130449e2be adjusted basic app to use the new yii extension installer.	%!s(int64=12) %!d(string=hai) anos