Added escaping to item group and item name. Also fixed product variat…

[Pat-ops]

…ion id mapping and added correction algorithm for already mis-assigned parent ids, where variation ids would have been required

Description

This fixes issues 194 (escaping characters in product names and categories) and 200 (regular_price is 0, happening on variations, caused by a wrong id assignment - it assigns the parent id, instead of the variation id)

Type of change

⚪ Bug fix (change which fixes an issue)

Tests

[ ] Unit Tests have been updated or added, as required
[ ] UI Tests have been updated or added, as required

Checklist:

[x] My code follows Naming Guidelines (DocType, Field and Variable naming)
[ ] No Form changes / My code follows the Form Design Guidelines
[ ] My code follows the Coding Standards of this project
[ ] My code follows the Code Security Guidelines of this project
[x] I have performed a self-review of my own code
[x] I have commented my code, particularly in hard-to-understand areas / No comments necessary
[ ] I have made corresponding additions/changes to the documentation
[x] All business logic and validations are on the server-side / No business logic or validation changes
[ ] No patches are necessary / Migration Patches have been added to the correct subdirectory of /patches and patches.txt have been updated