Fix reports issues

[joanagmaia]

Changes proposed ✍️

• Refactor paddings, and css classes to prevent widgets from overlapping and covering the Add widget button
• Change size of widget upon creation depending on widget type
• Refactor FilterComponent so that styles are fixed, when first filter changes, the value resets, prefills both activity platform and activity type according to the active integrations
• Fix Order selection on table additional settings
• Only show Granularity selection if chart type is area, bar, or table
• Only show Additional settings if chart type is table
• Fix column name on widget table

Relates to #279

Checklist ✅

• Label appropriately with Feature, Enhancement, or Bug.
• Tests are passing.
• New backend functionality has been unit-tested.
• Environment variables have been updated:
  • Local frontend configuration: frontend/.env.dist.local, frontend/.env.dist.composed.
  • Local backend: backend/.env.dist.local, backend/.env.dist.composed.
  • Configuration docs have been updated.
  • Team members only: update environment variables in override, staging and production env. files and trigger update config script.
• API documentation has been updated (if necessary) (see docs on API documentation).
• Quality standards are met.
• All changes have been tested in a staging site.
• All changes are working locally running crowd.dev's Docker local environment.