PADV 888 - Sidebar styling fixes

[alexjmpb]

Description:

This PR aims to fix various styles in the sidebar navigation that may affect the user experience.

Changes Made

• Align text to left inside sequence text.
• Improve loading screen.
• Improve error screen.

Screenshots

Text align

Before

After

Loading screen

Before

After

Error message

Before

After

Reviewers:

• @AuraAlba
• @anfbermudezme
• @Jacatove

[Jacatove]

The spinner is far better than the "Loading" text but I wonder if it is not a big effort use the spinner here

and only open the sidebar when it has its content?. This is just an observation. What are your thought?.

[alexjmpb]

The spinner is far better than the "Loading" text but I wonder if it is not a big effort use the spinner here and only open the sidebar when it has its content?. This is just an observation. What are your thought?.

The problem is that in this case we would have to change the learning MFE, since the button belongs there. I was thinking to do this when adding the disable sidebar functionality.