* Fix wrong type on hooktask to convert typ from char(16) to varchar(16)
* Fix bugs
* Improve code
* Use different trim function for MSSQL
* Fix bug
* Removed wrong changed line
* Removed wrong changed line
* Fix nullable
* Fix lint
* Ignore sqlite on migration
* Fix mssql modify column failure
* Move modifyColumn to migrations.go so that other migrate function could use it
* remove github.com/unknwon/com from models
* dont use "com.ToStr()"
* replace "com.ToStr" with "fmt.Sprint" where its easy to do
* more refactor
* fix test
* just "proxy" Copy func for now
* as per @lunny