Use specification version for editor.lib2
Add some FILE_TYPEs

- TESTCASE
- ELEMENT
- LAYOUT
Fix for new FILE_TYPE

- Add new type to branch
- Add getFileType()
Fix for new FILE_TYPE

- Add new branched for file type
- Implement getFileType method
Change method name from getCurrentDirectoryType to getDirectoryType
Add getFileType method
Fix branch order

- Test directory may have a Controller, Model, e.t.c directories
Fix methods for checking file type
Move GoToItem files
Fix how to open a file with default offset

- If offset is default(0), open a file with using EditorCookie class
Fix wrong GoToItem class
Use implementation version for editor.lib2
Format
Fix plugin command error #51