Supvisors

* Completion of fix about process CPU statistics when using SOLARIS mode.

* Add a grid to statistics plots in the **Supvisors** Web UI.

* Fix process CPU statistics when using SOLARIS mode.
Issue introduced in **Supvisors** 0.18 with statistics refactoring.

* Fix `supervisord` uptime in the **Supvisors** Web UI.
Issue introduced in **Supvisors** 0.18 with monotonic time consideration.

* Set a default warning message to state that Supvisors rules don't apply on the Supervisor page
of the **Supvisors** Web UI.

* Emphasize the selected Supervisor instance and Application in the navigation of the **Supvisors** Web UI.

* In discovery mode, clarify the logs in the event where the **Supvisors** nick identifier is not unique.

* Add a section about multicast in documentation troubleshooting.

* Recreate the internal proxy to the local Supervisor if older than 20 minutes, in order to palliate the closure
of all channels inactive during 30 minutes in the Supervisor HTTP server.
This fixes a rare bug that has been introduced in **Supvisors** 0.17, and whose occurrence has greatly
increased after the refactoring of the **Supvisors** 0.18 internal communications.

* Swap Memory and Network statistics cards in the **Supvisors** Web UI.

* Handle the `PermissionError` exception when trying to get disk usage.

* Update CSS for overflow parts in the **Supvisors** Web UI.

* Fix the different perception of **Supvisors** instances about a process whose state is forced.

* Fix regression using the `SINGLE_NODE` distribution rule.

* Share the configuration of `stdout` and `stderr` log files between all **Supvisors** instances.
`has_stdout` and `has_stderr` are added to the result of the XML-RPC `get_local_process_info`.

* When the `software_name` option is set, it is used as a prefix in all log traces.

* Add disk usage and read/write statistics to the **Supvisors** Web UI.
Disk statistics are published to the event interface and the JAVA client has been updated accordingly.

* In the Application page of the **Supvisors** Web UI, add the possibility to expand the process information
from all **Supvisors** instances where it is configured.
In the event of a process conflict, a `Conciliate` button is displayed instead od a list of **Supvisors** instances.
Clicking on this button displays the Conciliation page.

* Split the Main and Conciliation pages of the **Supvisors** Web UI.

* The conflicting processes are highlighted in the Main page of the **Supvisors** Web UI.

* Change the access of the Conciliation page of the **Supvisors** Web UI, by clicking on the `CONCILIATION` state.
A click on the **Supvisors** logo always brings back the Main page.

* Fix the renaming of `DEPLOYMENT` state as `DISTRIBUTION` in the JAVA client.