[FEATURE] Attributes maxSize and disallowed on file field
[TASK] Split error handling in AbstractFluxController to reusable method
Merge pull request #124 from NamelessCoder/fileattributes

[FEATURE] Attributes maxSize and disallowed on file field
Merge pull request #126 from NamelessCoder/errorhandling

[TASK] Split error handling in AbstractFluxController to reusable method
[BUGFIX] Fix fatal error using extensionName without custom controller
[TASK] Use class constant to store specially treated Exception code
Merge pull request #127 from NamelessCoder/errorhandling

[BUGFIX] Fix fatal error using extensionName without custom controller