Wip/issue 21 multiple config files shortcuts

[ezzarghili]

This fixes issue with multiple shortcuts when having multiple config files,tested with a play application using several config files.

[muuki88]

Issue found: Avoid mutable local variables

[muuki88]

if you need an index use

for( (target, i) <- targets.zipWithIndex) yield { ... }

[muuki88]

With scala 2.10 we can use string interpolation

s"$i${targets.size.toString.size}d")

[muuki88]

If I get this correctly, the shortcuts are generated based on the number of targets available.
So I got 3 targets, I will get short cut ids like this

val id = makeGuid
val targetSize = targets.size.toString.size
$id_SC_0$targetSize
$id_SC_1$targetSize
$id_SC_2$targetSize

If yes, you can put the targetSize in a variable, making it clear that it get's reused.

Otherwise this LGTM

[ezzarghili]

Thanks for the reviews, actually I am not familiar with scala that was really helpful,
in the other hand yes the shortcuts are generated based on the number of targets available
but, I am using a string format to get a fixed length id string
so for 10 targets I will get

    $id_SC01
    $id_SC02
    ...
    $id_SC10

and for 100 targets

    $id_SC001
    ....
    $id_SC100