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

````julia

const x = 1
````

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

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

also produces

````julia

const x = 1
````

instead of

````julia
julia> const x = 1
````