Remove code redundancy

[aymenBox]

Reference Issues/PRs

None

what does this implement fix? Explain your changes.

Group together some CSS code into one class to reduce code redundancy

any other comments.
I'm working on a new UI for my own instance of MeshCentral and I noticed some changes that could be made.

[si458]

This PR looks too bit of a change?
Did u use github to edit? The seems to be an issue at the moment with this happening

[aymenBox]

@si458 I will continue to do more push into this branch if it looks too bit of a change because I noticed a lot's of repeated and unused code , however I do my development on my remote server directly so too many changes to make a fork that's way I edit on Github the things I noticed.

[Ylianst]

This is a good PR, but I think all of the carriage returns where changed in the default.handlebar causing all lines of that file to be shown as changed. I see where you are going with this one and it's a good change. If I get a chance, I will add it in.

[Ylianst]

Ok, just added a commit to do that same: e4d8c04

[aymenBox]

Hello @Ylianst, thank you for merging this changes and happy to be helpful, however if you can give me some advices on where to start to make a full rewrite and optimization for the front end of meshcentral (as a contribution) , i know this task is not easy and very long and i still working on my own server and i managed to change a lot in the front end which is a lots of modification in the default.handlebar and styles.css file, do you think is it better to continue on this path and slowly keeps modifying the front-end this way or to do a full rewrite of the front-end part one more thing is the translation and deferent file that have to be recreated with deferent languages is there's a better approach also the deferent files for mobiles, any resources will be helpful i have read the published pdf file from the official website i found no clue about the meshcentral-web folder the only clue i found was a comment by you on Github , and lastly thank you 🙏 for this great software can't Wait to learn more and contribute more.