Relative paths for device configs. Change L1 keepalives to be
deactivated by default.
Remove L1 keepalives option from preferences. Fix console port
restoration for IOU and VPCS (when loading a project).
Remove uneeded param for IOS router setup.
Fixes NIO add and delete requests for VPCS.
Bump version to alpha5.
Reactivate cloud preferences page after alpha5.
Change open file name filters, path to tools and set some dialog as modal for OSX support.
Default paths for OSX support.