adjust frontend to skillValue and skillAllUsersStats

[sangaran10]

Description of changes

adjust frontend to simplification of skillValue and skillAllUsersStats in gateway

How has this been tested?

Please describe the test strategy you followed.

• automated unit test
• automated integration test
• automated acceptance test
• manual, exploratory test

In case of manual test, please document the test well including a set of user instructions and prerequisites. Each including an action, it's result, and where appropriate a screenshot.

Checklist before requesting a review

• My code follows the coding guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• My code fulfilles all acceptance criteria
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I have made corresponding changes to the documentation
• I have added explanation of architectural decision and rationales to wiki/adr
• I have updated the changes in the ticket description

Checklist for reviewer

• The code works and does not throw errors
• The code is easy to understand and there are no confusing parts
• The code follows the coding guidelines of this project
• The code change accomplishes what it is supposed to do
• I cannot think of any use case in which the code does not behave as intended
• The added and existing tests reasonably cover the code change
• I cannot think of any test cases, input or edge cases that should be tested in addition
• Description of the change is included in the documentation

[MP-DG]

I was able to manually test these changes locally. "it works on my machine"