Fixed detection of gradle module-names

[mawHBT]

If you modify gradle module-names in settings.gradle like this:

rootProject.children.each { subproject ->
     subproject.projectDir = file("module-" + subproject.name)
 } 

peass added a "/" between prefix and suffix, resulting in "module-/subproject.name". I removed adding the "/".

[DaGeRe]

Thanks for the PR, this looks fine to me. Could you also test whether this works with https://github.com/DaGeRe/peass/tree/jadexDebug for you? In general, the modules are more easily detectable when the tasks are derived (since the tasks are assigned to modules). In the future, only the results from the ./gradlew tasks should be used (since parsing the files is cumbersome and might not always work).