Add full support for job Arrays in E18 submodule.

Add return value list(tuple) to getListOfActiveJobs and add support
for this list throughout the module. Rewrite getListOfActiveJobs.
Add full support for job Arrays in lxplus submodule.

Add return value list(tuple) to getListOfActiveJobs and add support
for this list throughout the module.
Add full support for job Arrays in gridka submodule.

Add return value list(tuple) to getListOfActiveJobs and add support
for this list throughout the module.