merge code from er-server
merge code from er-server
Merge remote-tracking branch 'upstream/master'
add new handlers and some upgrade
replace less with baidu-jn-less
support port option
update webserver.md
fix according to jshint result
fix less include paths; add directoryIndexes conf variable;
relocate dirlist.tpl && sync code with lego-widgets
Merge pull request #53 from osdream/master

Fix Issue #26