Services: code style fixes, minor refactoring

What does this MR do?

It contains code style fixes, minor refactoring and also it removes some unnecessary comments. Every comment require a support just like a regular code line and this is why we should avoid using comments everywhere unless it's really helpful. Martin Fowler said "Find comment and refactor the code around it" :) our code is not that bad so let's not spoil it with comments.

Why was this MR needed?

Because GitLab is a live example of awesome code. Let's keep up a good job :)

Added 1 commit:

• 53223b8b - Services: code style fixes, minor refactoring

Marked this merge request as a Work In Progress

Added 1 commit:

• c14acda9 - Services: code style fixes, minor refactoring

Added 1 commit:

• b2af0d60 - Services: code style fixes, minor refactoring

Added 1 commit:

• 3baed8cb - Services: code style fixes, minor refactoring

Unmarked this merge request as a Work In Progress

Reassigned to @dzaporozhets

@dzaporozhets Please review

@vsizov looks good. Thank you for taking care of code quality!

Status changed to merged

mentioned in commit de073cf5