Custom filters

[jfilak]

I regularly search the stats on the retrace server for frequent crashes in components my team is responsible for. We're responsible for dozens of components in Fedora and I'd love to have an option to save a set of components to use for search, for example in a form of custom filters. Yes, I can save the query link, but it's not very convenient.

@Sesivany , abrt/abrt#1013