A single silence can supress multiple alerts so to reduce response size and the amount of data react UI needs to track move it out of alert instance (which will deduplicate it) and on each alert only store a reference. In the API return all silences as a global dict and each alert only contains the ID of silences suppressing it.
Internal packages are supported by Go 1.5+, any package in /internal/ dir is only importable from the same repo. This will cleanup main dir a bit and provide better namespace for unsee subpackages
