Merge branch 'fix/config-replace-try-catch-with-file-exists' into 'develop'

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

See merge request pleroma/pleroma!488

config/dev.exs

@@ -49,10 +49,9 @@ config :pleroma, Pleroma.Repo,
   hostname: "localhost",
   pool_size: 10
 
-try do
+if File.exists?("./config/dev.secret.exs") do
   import_config "dev.secret.exs"
-rescue
-  _ ->
+else
   IO.puts(
     "!!! RUNNING IN LOCALHOST DEV MODE! !!!\nFEDERATION WON'T WORK UNTIL YOU CONFIGURE A dev.secret.exs"
   )