Setting $wgRegisterInternalExternals = false for proto server should not
store the http/https links in externallinks table
Also fix detection of own links for links with query or anchor or
nothing
new also detected:
//localhost
//localhost?query
//localhost#anchor
already detected:
//localhost/path
Change-Id: Idd03d309cc3b71728a8cbea460efa12b10348d64
