Integration tests added for calculations. Negative test missing. By xconnect
run integration_test.sh from test main
Merge branch 'master' into system-tests
added process dependency for tests.
test failure exit code
deleted failing test again
Merge branch 'system-tests'
removed redundant call to the test script in travil file
closes remainder issue #45 and fixes issue #40
Merge branch 'preproc-lexer'
Started fixing hlint errors for RailEditor
Merge branch 'master' of https://github.com/SWP-Ubau-SoSe2014-Haskell/SWPSoSe14
Test cases restored and modified
Merge branch 'master' of https://github.com/SWP-Ubau-SoSe2014-Haskell/SWPSoSe14