[Form5] Stash:
[Cache] Fix: AddServer's initial value.
[Conflict] Been resolved
[App] New: Added OpAppException class.
[OnePiece5] Change: StackError's Value is unity.
[OnePiece5] Fix: Does not exists error_get_last case.
Merge branch 'develop' of https://github.com/TomoakiNagahara/op-core into develop
[NewWorld5] New: Implemented Forward feature.
[Model/Login] New: Create GetLoginFormConfig method.
[NewWorld5] Fix: Forward method.
[Model] Change: edit a bit.
Merge commit 'fda0fe4' into develop
[NewWorld5] Fix: Fatal error.
[Form5] Fix: file path convert to document root path.
[Form5] Change: Supports changing the label of the file remover.
[Form5] Fix: Validate check
[Form5] Fix: Required of File upload.
[Form5] Change: Stop the convert to lowercase of input-name.
[NewWorld5] Fix: Does not print messeage by layout is specifieed empty.
[Form5] Change: error message.