Adapt Tab List on Record Show Page for iPad and mobile display

[FelixMalfait]

The tab bar is becoming too big.

On smaller desktop (e.g. iPad), it's impossible to access the emails tab:

On mobile this adds a scroll to the page:

cc @Bonapara for recommandations

[Bonapara]

Quick fix:

The timeline menu should have a horizontal scroll to view the tabs on the right.

Remove padding on the right & left of the body as there is less horizontal space in Mobile:

[jeet1desai]

@Bonapara @FelixMalfait, could you please assign it to me, I'd love to do it.

[FelixMalfait]

Thanks @jeet1desai! Done