Completed timeline

Recommited the code portal page, adjusted some pages' UI, achieved the
timeline
Revert "Completed timeline"

This reverts commit 050f4a8698d6859a0a15919af8baf2d7b502a592.
Merge remote-tracking branch 'upstream/user' into user
Completed timeline

Recommitted portal page, adjusted some pages' UI
Merge pull request #464 from linzongshu/user

Completed timeline