allow development server to be publicly reachable
allow development server to be publicly reachable

localhost restricts the development server to the local system where
0.0.0.0 allows for external access
added a message to indicate when hot reloading is disabled
lots of other cleanups in the file

rrandom/debugger.html,jasonLaster/debugger.html,jbhoosreddy/debugger.html,tommai78101/debugger.html,clarkbw/debugger.html,amitzur/debugger.html,wldcordeiro/debugger.html,devtools-html/debugger.html,jbhoosreddy/debugger.html,devtools-html/debugger.html,jasonLaster/debugger.html,ruturajv/debugger.html,rrandom/debugger.html,amitzur/debugger.html,darkwing/debugger.html,darkwing/debugger.html,amitzur/debugger.html,clarkbw/debugger.html,devtools-html/debugger.html,ruturajv/debugger.html,wldcordeiro/debugger.html,tomrav/debugger.html,darkwing/debugger.html,wldcordeiro/debugger.html,devtools-html/debugger.html,clarkbw/debugger.html,jasonLaster/debugger.html,kdzwinel/debugger.html,jsnajdr/debugger.html,tommai78101/debugger.html,jsnajdr/debugger.html,devtools-html/debugger.html,tomrav/debugger.html,darkwing/debugger.html,rrandom/debugger.html,helenvholmes/debugger.html,wldcordeiro/debugger.html,tommai78101/debugger.html,kdzwinel/debugger.html,ruturajv/debugger.html,borian/debugger.html,bomsy/debugger.html,jbhoosreddy/debugger.html,irfanhudda/debugger.html,helenvholmes/debugger.html,bomsy/debugger.html,clarkbw/debugger.html,tommai78101/debugger.html,jasonLaster/debugger.html,devtools-html/debugger.html,irfanhudda/debugger.html,jbhoosreddy/debugger.html,wldcordeiro/debugger.html,rrandom/debugger.html,borian/debugger.html,ruturajv/debugger.html,devtools-html/debugger.html,jasonLaster/debugger.html,wldcordeiro/debugger.html,ruturajv/debugger.html,clarkbw/debugger.html,tomrav/debugger.html,jasonLaster/debugger.html,helenvholmes/debugger.html,jbhoosreddy/debugger.html,borian/debugger.html,tommai78101/debugger.html,rrandom/debugger.html,tomrav/debugger.html,kdzwinel/debugger.html,darkwing/debugger.html,borian/debugger.html,irfanhudda/debugger.html,jbhoosreddy/debugger.html,jsnajdr/debugger.html,irfanhudda/debugger.html,ruturajv/debugger.html,jbhoosreddy/debugger.html,irfanhudda/debugger.html,borian/debugger.html,kdzwinel/debugger.html,darkwing/debugger.html,bomsy/debugger.html,jsnajdr/debugger.html,amitzur/debugger.html,bomsy/debugger.html,amitzur/debugger.html,wldcordeiro/debugger.html,bomsy/debugger.html,jasonLaster/debugger.html,tomrav/debugger.html,ruturajv/debugger.html,amitzur/debugger.html,borian/debugger.html,helenvholmes/debugger.html,bomsy/debugger.html,darkwing/debugger.html,bomsy/debugger.html