Fix bug #189, <tab><cr> now uses first completion
Fix bug #189, <tab><cr> now uses first completion

On discussion with maxauthority this is probably the best way of doing
things for now.

moonshadow/dactyl,nathyong/dactyl,paretje/vimperator-labs,nullren/vimperator-labs,Quicksaver/vimperator-labs,airodactyl/dactyl,Kjwon15/dactyl,mcarton/vimperator-labs,seanmorton/vimperator-labs,madand/pentadactyl-pm,moonshadow/dactyl,moonshadow/dactyl,madand/pentadactyl-pm,5digits/dactyl,airodactyl/dactyl,invl/dactyl,madand/pentadactyl-pm,Sheile/vimperator-labs,zklinger/vimperator-labs,nathyong/dactyl,5digits/dactyl,nathyong/dactyl,Kjwon15/dactyl,airodactyl/dactyl,airodactyl/airodactyl,Quicksaver/vimperator-labs,stemar94/vimperator-labs,invl/dactyl,invl/dactyl,Evidlo/vimperator-labs,airodactyl/dactyl,Kjwon15/dactyl,5digits/dactyl,invl/dactyl,Kjwon15/dactyl,madand/pentadactyl-pm,moonshadow/dactyl,moonshadow/dactyl,derenio/vimperator-labs,seanmorton/vimperator-labs,airodactyl/dactyl,airodactyl/dactyl,Kjwon15/dactyl,derenio/vimperator-labs,moonshadow/dactyl,zklinger/vimperator-labs,nathyong/dactyl,5digits/dactyl,5digits/dactyl,airodactyl/airodactyl,Evidlo/vimperator-labs,invl/dactyl,mcarton/vimperator-labs,5digits/dactyl,invl/dactyl,nathyong/dactyl,Sheile/vimperator-labs,madand/pentadactyl-pm,Kjwon15/dactyl,stemar94/vimperator-labs,nathyong/dactyl,madand/pentadactyl-pm,paretje/vimperator-labs,nullren/vimperator-labs