Wrong section calculation in python extention if non-latin symbols are used

[Andrey Skvortsov]

Open attached project and try to edit gray sections of python code. They are read-only. Remove comment in the header with Russian text and see that previously read-only section is available for editing now.

[Andrey Skvortsov]

Fix section styling in code editor (python and c extensions) if non-latin symbols are used in the code

Problem exists even if non-latin characters are placed in comments. Close #76

→ <<cset 50fc08760225>>

[Andrey Skvortsov]

Fix section styling in code editor (python and c extensions) if non-latin symbols are used in the code

Problem exists even if non-latin characters are placed in comments. Close #76

→ <<cset c48470e2b383>>