NetworkServer HandleConnection: check if connectionId already in use

NetworkServer HandleConnection: >0 check added to fix MirrorNetworkin…

…g#321

Syntax

Remove Network Manager Editor (MirrorNetworking#310)

* Remove Network Manager Editor

* Add reorderable list to prefabs

* Move Start On Headless to more logical place

TelepathyTransport: added NoDelay option

Updated Telepathy again. Forgot to check SendMessagesBlocking return …

…value before.

Added OnStartLocalPlayer Description (MirrorNetworking#336)

NetworkTransformBase: remove unnecessary connectionToServer check

Telepathy updated to latest version (performance improvements under h…

…eavy load)

Change Contributing Link