Update on button specificity.

[joanabpereira]

This PR is for changes in buttons' classes

What was happening

• A breaking change was added when customers were using the btn-* classes to customise their own buttons.

What was done

• The spcecifity level of btn-* (primary, sceondary, ...) classes was lowered

Test Steps

1. Test page

Checklist

• tested locally
• documented the code
• clean all warnings and errors of eslint
• requires changes in OutSystems (if so, provide a module with changes)
• requires new sample page in OutSystems (if so, provide a module with changes)