Begining of language lexing support
Absolutize file path at loading to make type detection from name easier
Add Python (and scons) lexing support
Add CPP lexer and derivated (cs, vala, flash, go ...) config
Add theme and style definitions and loading.

Apply them to lexer style is pending.
Add theming support over styles.
Create FileTypeManager and move to it all related functions (almost from CodyApp)
Add .conf to "properties" file type
Generate file wildcard
Use wildcard in open dialog box then force using filetype if specified or infer it if any