See card: https://trello.com/c/bSqIkTvr/213-8-conflict-stats-as-a-developer-i-want-stats-gathered-on-conflicts-that-occur-such-that-i-can-get-a-better-understanding-on-pote

Additionally, we need to add some graphs in the sync dashboard. Such as

conflicts - single number gauge
conflicts over time - line chart
conflicts per operation - pie chart
conflicts per operation over time - line chart
conflicts per operation type - pie chart
conflicts per operation type over time - line chart