sbt/sbt — pull request #1051 by dansanduleac (2013-12-23 15:20:23+00:00)
Title: Fix saving session settings

As it stands, writing back *new* session settings that span more than 1 line will "double-space" each line inside the setting, not just between settings.
So something like
```scala
val s: Setting[_]
val ss: SessionSettings.SessionSetting = (s, List(
"libraryDependencies ++= Seq(",
" something,",
" something else",
")"
))
```
will end up written as
```scala
libraryDependencies ++= Seq(

something,

something else

)
```

This fixes it to only add double-space *between* individual `SessionSetting`s.