clipboard exploit fixes
folder exploit fixes
paper exploit fixes

i think my favourite part of this was
```var/obj/item/i = usr.get_active_hand()
if( ...  && usr.get_active_hand() != i))```
refining the clipboard topic checks
prisoner computer3 topic exploit fixes

fun : you could trigger grenades this way
computer3 remote view exploit fix

you could look at any atom for a tick.
could need improvement, does not check camera network at the moment,
because of the costly and temporary nature of the getter proc.
computer3 program topic protection
computer3 ntos topic exploit prevention
filing cabinet exploit fix

hooray for teleporting atoms to you via magic office furniture
cyborg topic exploit fixes

all kinds of fun here
robot computer emagging exploit fix

so an emagged borg can in turn emag all others ?
the more you know.
seems extremely OP to me but i am just closing the exploit, not changing the game.
derp
derping derps

thanks to @mwerezak
Merge pull request #5846 from Walter0o/href_fun

exploit-fix-o-rama