B"H make sure to close sockets when finished
B"H net_io.c: revert previous change and advertise HTTP 1.1

It seems server code should be compatible with HTTP 1.1; the features
unique to 1.1 mostly are upon the client to support, and some headers
used (for example Cache-Control) may need 1.1.
B"H net_io: http: check if file can be sent
B"H net_io.c: add missing else statement
B"H net_io.c: http serve: return HTTP response codes
B"H net_io.c: use %d like local code
B"H net_io.c: http server: content should be dynamically allocated
B"H net_io.c http server: hopefully mem code is OK now

Still learning the ropes memory-wise :-)
Merge branch 'master' of https://www.github.com/MalcolmRobb/dump1090 into socket_hang
Merge branch 'master' of https://www.github.com/MalcolmRobb/dump1090 into http_server_wk
B"H Merge branch 'master' of https://www.github.com/MalcolmRobb/dump1090 into socket_hang

Conflicts:
	net_io.c
Merge branch 'master' of https://www.github.com/MalcolmRobb/dump1090 into http_server_wk
faup1090 service table fixes

* Set all the ports in the services table we're not using to zero.

* Don't enable a table entry that's disabled but has a port defined.  This allows us to use the table definition for the 30005 port for us to connect out to it.
Revert "Version bump to 1.15."

This reverts commit 87c3c5ae8c2efbbb73b1919d6f34ddb7895a207b.
FB24621

move html out of JS into html page. use on click instead of attaching
event listeners that never get destroyed.
Merge pull request #1 from aaraya1516/master

Avoid javascript memory leaks on web page
Merge pull request #3 from hhm0/http_server_wk

Various Http server fixes for file existence checking and error handling
Merge pull request #4 from hhm0/socket_hang

Socket hang
Version bump to 1.15.
"make install" updates

* Install dump1090 to /usr/bin in the Linux style (rather than /usr/local/bin).

* Install HTML files as part of the "make install" (rather than requiring
one to do some variant of "make -f makefaup1090 install" to get the HTML
files dump1090 needs into their right location.

As a result of this a "sudo make install" should produce a working standalone
dump1090, though makefaup1090 options still add capabilities like starting
and stopping dump1090 and boot and shutdown.