Merge pull request #537 from youyong205/master

fix many bug
Merge pull request #538 from youyong205/master

refactor
Merge pull request #539 from youyong205/master

delete the unused ftl
Merge pull request #540 from youyong205/master

modify the default tag
refactor tag module
resolve conflicts
Merge pull request #541 from leonindy/master

refactor tag module