* src/cuirass/templates.scm: Remove the evaluation restart dropdown arrow.
* src/static/css/cuirass.css (no-dropdown-arrow): New rule.

* src/cuirass/http.scm (url-handler): New route
"/admin/evaluation/<id>/restart".
* src/cuirass/templates.scm (evaluation-info-table): Add an evaluation restart
button.

* src/cuirass/database.scm (db-restart-evaluation!): New procedure.
* tests/database.scm (db-restart-evaluation!): New test.

* src/cuirass/templates.scm (build-details): Allow unconditionnal build
restart.

* src/cuirass/http.scm (url-handler): New route "/admin/build/<id>/restart".
* src/cuirass/template.scm (build-details): Add a "restart" button.

* src/cuirass/database.scm (db-restart-build!): New procedure.
* tests/database.scm (db-restart-build!): New test.

* src/cuirass/remote-server.scm (remote-server): Move the locale setup to the
publish thread.
* src/cuirass/remote-worker.scm (remote-worker): Ditto.
* src/cuirass/remote.scm (publish-server): Set the locale.

* src/cuirass/remote-server.scm (remote-server): Use a default locale.
* src/cuirass/remote-worker.scm (remote-worker): Ditto.

* src/cuirass/database.scm (db-register-builds): Remove commentary.

* tests/database.scm (%dummy-worker): Fix tests.

* src/cuirass/templates.scm (machine-status): Pick the first worker build if
multiple builds are started on the same worker.

* src/cuirass/database.scm (db-get-build-percentage): Consider both successful
and failing builds.

* src/cuirass/remote.scm (zmq-server-info, zmq-worker-request-info-message):
New procedures.
* src/cuirass/remote-server.scm (%log-port, %publish-port): New parameters.
(read-worker-exp): Handle 'worker-request-info message.
(remote-server): Set the new parameters.
* src/cuirass/remote-worker.scm (start-worker): Rename "server" argument. Send
a 'worker-request-info message to discover the server log port and publish
port.
(remote-worker): Adapt it.

bin/cuirass.in (%options): Fix "zabbix-uri" argument.

* bin/cuirass.in: Add "--zabbix-uri" argument.
* src/cuirass/zabbix.scm (%zabbix-uri): Export it.

* src/cuirass/database.scm (db-get-worker, db-get-workers): Return last-seen
field as integer.

* src/cuirass/remote.scm (swallow-zlib-error): New macro.
(send-log): Use it.

* src/cuirass/remote-worker.scm (remote-worker): Stop the avahi poll loop once
the workers are started.

* src/cuirass/database.scm (db-get-builds): Add missing parens.

* src/cuirass/database.scm (db-get-builds): Fix weather value.
* tests/http.scm (build-query-result): Adapt it.

* src/cuirass/templates.scm (specifications-table): Add RSS link.

* src/cuirass/templates.scm (evaluation-info-table): Add RSS link.

* src/cuirass/http.scm (url-handler): Pass the specification to
"db-get-builds" procedure.

This prevents the dates from being formatted using the current locale.

* bin/cuirass.in: Use a default locale.

* src/cuirass/http.scm (respond-xml): New procedure.
(url-handler): Use it for the RSS feed.

* src/cuirass/rss.scm: New file.
* Makefile.am (dist_pkgmodule_DATA): Add it.
* src/cuirass/http.scm (url-handler): Add "/events/rss" route.

* src/sql/upgrade-4.sql: New file.
* Makefile.am (dist_sql_DATA): Add it.
* src/schema.sql (Builds)[weather]: New field.
(Builds_weather_evaluation): New index.
* src/cuirass/database.scm (db-get-last-status): New procedure.
(db-update-build-status!): Use it and update the new weather field.
(db-get-builds): Adapt it.
* tests/http.scm (build-query-result): Ditto.

* src/cuirass/templates.scm (build-details): Move the weather icon.

* src/cuirass/remote-worker.scm (%workers-started?): New variable.
(remote-worker): Use it to start workers only once.

* src/cuirass/database.scm (db-get-builds): Add "oldevaluation" filter.
* src/cuirass/templates.scm (build-details): Add "history" argument.
* src/cuirass/http.scm (url-handler): Adapt it.

* src/cuirass/templates.scm (build-details): Display weather.

* src/cuirass/database.scm (build-weather): New macro.
(build-status->weather): New procedure.
(db-get-builds): Return the build weather using the new procedure.
* src/cuirass/http.scm (build->hydra-build): Also return the weather.
* src/cuirass/templates.scm (weather-class, weather-title): New procedures.
(build-eval-table): Display the weather.
* tests/database.scm ("db-get-build weather"): New tests.
* tests/http.scm (build-query-result): Adapt it.

* src/cuirass/database.scm (db-update-build-status): Only consider evaluations
that happened before the current one. This is useful when updating the build
status of old evaluations.

* src/cuirass/database.scm (db-get-worker): Handle the case where no worker
were found.

* src/sql/upgrade-3.sql: Fix syntax.

* src/sql/upgrade-3.sql: New file.
* Makefile.am (dist_sql_DATA): Add it.
* src/schema.sql (Builds)[last_status]: New field.
* src/cuirass/database.scm (db-update-build-status!): Honor it.
(db-get-builds): Return it.
* tests/database.scm ("db-update-build-status!"): New test.

Evaluations are added sequentially to database but builds are not always
registered nor performed in order. This means that a build corresponding to an
older evaluation can be returned first if it was completed last. Order by
descending evaluation id to prevent it.

* src/cuirass/database.scm (db-get-builds): Add "evaluation" order.
* src/cuirass/http.scm (url-handler): Order latestbuilds by descending
evaluation number.

* src/cuirass/database.scm (db-add-worker): Rename ...
(db-add-or-update-worker): ... into this new procedure.
(db-get-worker, db-remove-unresponsive-workers): New procedures.
* src/cuirass/remote-server.scm (%workers): Remove it.
(pop-build): Adapt it.
(remove-unresponsive-workers!): Remove it.
(read-worker-exp): Adapt it.
(zmq-start-proxy): Ditto.
* tests/database.scm ("db-add-worker"): Rename ...
("db-add-or-update-worker"): ... into this new test.
("db-get-worker", "db-remove-unresponsive-workers"): New tests.