Request: Default Post Option

[lehitoskin]

It'd be handy to have a way to make every post use a default option, say, since4pass. I don't know how this could be done generically for use with sites other than 4chan, but I think it'd be useful.

[floens]

There could be an option below the default name option that does the same but for the Options field.

[floens]

Closing as a duplicate of #504
This issue was first but the other one has an extra suggestion.