Use consistent favicon (Percona logo) across all distribution methods

We need to ensure we have the same Percona favicon for all the components we have:
1) Grafana based part - dashboards
2) Installation wizard / Password page

This should be consistent on all distributions: docker, AMI, OVA

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On AWS Marketplace image we have Angular favicon but in docker build we have the Grafana logo.

Desired state:

1. Use Percona favicon everywhere