Made the tool skip a stage if there's only one output

Made the tool skip the output selection stage if there's only one output
on the target entity. The previous adv wire tool had this feature.

Also fixed a minor problem where the selected input would be set to 1
when you didn't want it to (such as after completing a wiring).
CPU Uploader: Halved packet size, doubled upload speed
Also tweaked the singleplayer limit, which was previously too high
Fixes #468
fixed typo which caused missing vector = positive(vector)
Fixed broken commit "made tool skip a stage if only 1 output"

Was probably my fault, sorry. Everything should work now.
Merge pull request #471 from natrim/patch-1

fixed typo which caused missing vector = positive(vector)
EGP: Renamed output "link" -> "wirelink"
This change is backwards compatible with old dupes
Fixes #470, at least for some posters in the issue
Wire Adv: Fixed error when clicking a Wire ent without inputs
Fixes #466
CPU Uploader: Reverted previous commit; doubled packet size
Reverted 9d642ef46662b9401f70c391e7880c70aa599af3
Using Int24 was breaking float literals