* adjust code.
 * use default instead of warning.
 * trim file extension name.
 * fix board children tip.
 * mv wechat to followUs.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps
 * Add default icon for followUs.
 * Modify wechat to followUs.
 * Adjust code format.
 * Modify deleteHtmlEmptyLine to rtrimContent function.
 * Add header301 function.
 * use header301.
Merge branch 'master' of https://xirang.5upm.net/git/chanzhieps
  * change summary to desc.
 change product.summary to desc.
 * change summary to desc.
 * fix date in article list.
 * ajusted style of create/edit block.
 * ajusted ui text of block admin.
 * Adjust js code.