Fixes watch port collisions when running multiple instances of EAK

If you have connect-live-reload installed then the custom port number
gets clobbered, resulting in the default watch port always being set.
Changes live reload port to higher to make potential collisions less likely.

Live reload ports are now 35729 + an offset depending on what port is
chosen for the main server.
Merge pull request #538 from jrhe/watch-port-collision-fix

Watch port collision fix