[FIX] add verification to check instance Identifier
There is a problem when try to make a buckup of tiki instance installed from a download from source-force witch does not have GIT or SVN as version controll.
It provide a message of Call to undefined method TikiManager\Libs\VersionControl\Src::getUntrackedFiles()
on Tiki
class when try to create a buck up..
When test
getIdentifier()
it return SRC
witch does not implement getUntrackedFiles()
, so to fix that it required to add a condition to check if the version control is SVN
or GIT
before processing.