User info fixes again

See merge request !489

Validate user info

See merge request !465

#292 Replace try/rescue with File.Exists? in dev.exs

See merge request !488

Upload filter: anonymize filename

See merge request !486

It replaces the original filename with a randomly generated string.

reverse proxy / uploads

See merge request !470

Add Pleroma.Config.delete/1

See merge request !484

Fix supervisor order

See merge request !485

This starts `Pleroma.Web.Endpoint` after all other processes and may
avoid some weird bugs (especially at start/restart).

Also properly ignores starting the gopher's gen_server if disabled.

i like you eal don't take it personally<3

Breaks banner updating.

config/prod.exs: Remove server: true

See merge request !483

This breaks mix tasks in regular Elixir

[CI] Enable CI caching for _build and deps

See merge request !482