* refactor struct's time to remove unnecessary memory usage

* use AsTimePtr simple code

* fix tests

* fix time compare

* fix template on gpg

* use AddDuration instead of Add

* use AfterLoad instead of AfterSet on Structs

* fix the comments on AfterLoad

* fix the comments on action AfterLoad

* use created & updated instead BeforeInsert & BeforeUpdate

* fix vendor checksum

* only show generated SQL when development mode

* remove extra update column updated_unix

* remove trace config

* refactor: remove workaround after the golang 1.7 release.

* remove unused import.

Signed-off-by: Bo-Yi Wu <appleboy.tw@gmail.com>

* refactor: Add remove function.

* refactor: rename

* refactor: update build flag

- Update import paths from github.com/go-gitea to code.gitea.io
- Fix import path for travis

See https://docs.travis-ci.com/user/languages/go#Go-Import-Path

Unix() already uses UTC as timezone

- Prevent panic on creating notice if database is not available
- Prevent incorrect folder on Windows ("/" instead of "\")