opportunity: accept meetup without date or location

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
neo4j: Print an error message when the server is down.

Show the message as expected.

Signed-off-by: Jean-Christophe Beaupré <jcbrinfo@users.noreply.github.com>
opportunity: prettier meetup creation

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: prettier meetup participation form

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: by default the server uses port 8080

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: support not being at web server root

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: meetups hash also rely on timestamp

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: use a container in "meetup" and "meetup_confirmation"

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: restrict modification of old entries

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: improve look of welcome message

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: nicer meetup creation confirmation

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
opportunity: always show at least 5 answer fields

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
xymus.net: update xymus.net nitcorn config to include an opportunity client

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
xymus.net: opportunity use site's header

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>
Merge: Tweaks to Opportunity

Prettier forms and other modifications for your consideration.

I will deploy it on a server later today or tomorrow.

Pull-Request: #859
Reviewed-by: Jean Privat <jean@pryen.org>
Merge: neo4j: Print an error message when the server is down.

Show the message as expected.

Pull-Request: #861
Reviewed-by: Jean Privat <jean@pryen.org>
Reviewed-by: Alexandre Terrasa <alexandre@moz-code.org>