Improving timeline layout

[tdipisa]

Description

Empty space management to be optimized between new background switcher

Widgets trai is overlapping

Reference map
https://dev-mapstore.geosolutionsgroup.com/mapstore/#/context/demo_context/46500

What kind of improvement you want to add? (check one with "x", remove the others)

• Minor changes to existing features
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

Other useful information

[offtherailz]

@allyoucanmap I'd ask to sovas to get in touch with you to get some hints about how to solve the layout conflict with widgets tray with the new layout, if you have some.