Protocol template editor skeleton

See merge request !68

Implement spin boxes for 64bit float types

See merge request !67

With the default implementation the first input is transformed
into a float so the next value written will go after the comma.

Implement spin boxes for 64bit integer types

See merge request !66

179 dataformat editor

See merge request !65

This avoids reloading the json_widget content immediately on
each keyboard input or mouse event (i.e. combobox mouse wheel
update)

This method will allow to check whether the content of the editor
is valid and continue further.

This will allow to more easily execute validation.

Updated tests

This allows the user to make better use of available space.

Test cleanup

Library editor

See merge request !63

Fixes #178

Core implementation

See merge request !62

DescriptionWidget was over-engineering.

This decorator disable the possibility to add attributes to
to python objects outside the __init__ function.

Now:

- Only shows know assets subfolder
- Only show the version of the asset to edit

Part of #186
Replaces !51