- set cascade to all and delete-orphan to delete interfaces when
  deleting a host
- button added on the view host page to delete host (admin only)

JIRA INFRA-557 #action In Progress

Retrieving all items from the database takes some time.
The task is thus handled by the RQ worker.
We use ajax to periodically monitor the status of the job
and redirect to the file when ready.
A progress bar is displayed to let the user see the progress.

The mechanism put in place could be re-used for other use cases.

JIRA INFRA-545 #action In Progress

JIRA INFRA-545

Included libraries:
- DataTables 1.10.18 (with bootstrap 4 theme)
- Buttons 1.5.2
- Column visibility 1.5.2
- Print view 1.5.2

JIRA INFRA-545

This is not directly supported by CodeMirror.
See https://github.com/codemirror/CodeMirror/issues/850

Add cm-resize library from https://github.com/Sphinxxxx/cm-resize

JIRA INFRA-543 #action In Progress

CSENTRY_ENVIRONMENT shall be set to production|staging|development
It can be used when sending errors to Sentry

JIRA INFRA-525

JIRA INFRA-500 #action In Progress

JIRA INFRA-459 #action In Progress

The official flask-bootstrap is still not compatible with bootstrap 4.
The application basically only uses the main template and one macro.
It's easier to include directly bootstrap in CSEntry.
It makes upgrading to the latest bootstrap much easier and removes a
dependency.

Update to bootstrap 4.1.3

Added:
- jquery-3.3.1.min.js
- bootstrap.bundle.min.js (include popper but not jquery)

Note that jquery.slim can't be used.
We need for example $.getJSON for datatables.

JIRA INFRA-414

JIRA INFRA-412

Allow to enter Ansible variables on host in YAML format.
Use codemirror (http://codemirror.net) to make editing YAML easier.

JIRA INFRA-412

+ yaml mode

Add new jinja2 filter to format datetime

Only save exceptions that occur before the AWX job was triggered.
If the AWX job failed, we can refer to the logs on AWX.

Allow to display tasks

JIRA INFRA-403

Change "CSentry" to "CSEntry-test" in the navbar (upper left corner)
and set it to red on the staging server.

This is done by setting the variable CSENTRY_STAGING to True in the
settings.cfg file for the staging server (variable set to False by
default).

JIRA INFRA-347

Allow to create a VM or Virtual IOC

- RQ Dashboard shall only be accessible to admin users
- "REDIS_URL" is hard-coded in rq-dashboard (had to rename RQ_REDIS_URL)

This is to be used for stack of switches only

- a stack_member is linked to an host (device_type has to be "Switch")
- a stack_member is an integer between 0 and 9 (included) or can be None
- the couple (host_id, stack_member) must be unique

JIRA INFRA-267

1. When we have a stack of switches, the same IP is associated to several
   switches
2. Move the items <-> host assocation to the item create/edit page

JIRA INFRA-267

The interface name doesn't need to be displayed in the form as we force
it to the hostname.

We set the interface name to the hostname when submitting the form.
This fixes the copy/paste issue with the mouse that didn't trigger the
keyup event.

JIRA INFRA-287

JIRA INFRA-281

The class "is-invalid" is removed on all type=text input
on keyup event.

JIRA INFRA-285

- create many-to-many relationships between the user table and
attributes tables (manufacturer / model / location / status / action)
- add a checkbox as the first column of the attributes table to add or
remove an attribute to the favorites
- add a new page to display the favorite attributes

JIRA INFRA-283

"type" field on host replaced with foreign key "machine_type_id"

JIRA INFRA-281

The description is only shown if not empty

JIRA INFRA-280

Having the username in the API is more useful than the display name.
We keep the display name in the UI.

Fix INFRA-241

Fixes INFRA-224

Allow to easily print the actions