* add proto files to clangify
* apply clangify to proto files
* remove blocksonsingleline, it didn't actually do anything
also add missing space to the travis warning, emoji are monospace too
That marker is only recognized by pb3-compatible compilers, meaning that
tools which are otherwise compatible with our files break on them.
Notably, this includes hprotoc (for haskell).
With this update a new chat history definition is added on a per
room bases which allows operators to specify the number of chat
messages to store and present to the user on join. Please see
the sample ini for room definitions.
