Output issues with eval=false

[michakraus]

I came across two issues when eval=false is set on a julia code snippet.

1. Empty lines are added in the output, e.g., the code

   ```julia; eval=false
   const x = 1

   produces

const x = 1

2. term=true is ignored, e.g., the code

   ```julia; eval=false; term=true
   const x = 1

   also produces

const x = 1

instead of

````julia
julia> const x = 1