[adminchannel] Use the new trigger.isop and few other minor improvements
[adminchannel] Use the new trigger.isop and few other minor improvements

Also, change every instance of input to trigger, issue #76
All commands in adminchannel are usable by channel ops, not only bot admins
Add an isop command to see if you are an op according to the bot (for debugging)
Fixes issue #82

Uname-a/knife_scraper,Uname-a/knife_scraper,Uname-a/knife_scraper