Add expiration time more than a month for privatebin.net

[Benjamin-Loison]

The default configuration seems to support 1 year and never expiration times:

PrivateBin/cfg/conf.sample.php

Lines 114 to 125 in 2e2c70e

	[expire_options]
	; Set each one of these to the number of seconds in the expiration period,
	; or 0 if it should never expire
	5min = 300
	10min = 600
	1hour = 3600
	1day = 86400
	1week = 604800
	; Well this is not *exactly* one month, it's 30 days:
	1month = 2592000
	1year = 31536000
	never = 0

However the example instance https://privatebin.net doesn't support these options:

In my case 1 month isn't enough while 1 year would match my expectations. If the reason is to avoid having too much data on the example instance because the expiration times are too far away, maybe adding some countermeasures such as CAPTCHAs etc would make sense.

What is the example instance stance about expiration time greater than 1 month?

Maybe I am just not aware that the instance https://privatebin.net shouldn't be used for production pastes.

[elrido]

Details on why this was disabled can be found in #594. There are other instances that have that option still enabled, if you don't want to run your own instance.