Alignak-app

This release add following features / fixes:

* Allow to filter services inside host synthesis view 315
* Host synthesis tab should include host name 312
* Fix case port is empty in config 311
* Fix case number of problems change when filter services or host 309
* Improve WS connection, information 308, 305
* Fix exception when webservice is disabled 307
* Improve display of Host / Service notification options 306
* Fix case Host services are not updated after the first request 304
* Improve priority order of threads 303
* Add / fix Several aesthetics and design issues 302
* Add view host customs variables 301
* Raise alerts when daemons freshness are expired or not alive 300

Add following features/fixes:

* Fix problems that are not always updated 296
* Add "new" to spy items when a new host is spied 294
* Add entry point for App in setup.py 293
* Add hint QWidgets in different views 291
* Review spy button of host synthesis view 290
* Use the Alignak Web Service module to ack, downtime 279

* Make App tabs movable
* Alignak status icon changes depending on the status of the demons
* Limit host history events to 25
* Make problems requests start in differents threads (improve start of App)
* Review spy messages, make them more useful to the user
* Make window as active, set focus from Menus
* Many fixes on requests and display

**IMPORTANT:** this release is not available on **pip** due to pending changes on the alignak client ! (See https://github.com/Alignak-monitoring-contrib/alignak-backend-client/pull/72)

Add following features:

* Host synthesis and problems view should get focus enhancement 276
* Let user choose to display "problems" or "synthesis" at start enhancement 275
* Add filter for problems enhancement 272
* Add the ability to edit other things for user enhancement 205
* Proxy management enhancement 274

Alignak-App, version 1.4.0 add following features and fixes:

* Update translations (fr_FR)
* Add a counter on problems tab
* Remove buttons QWidget and add menus
* Allow to spy host from Problems view
* Review height of events
* Last events are displayed at the top
* Display an error message when connection has failed
* Add automatic refresh to alignak daemon status
* Add possibility in problems view to display a host in synthesis
* Review system for Host spied
* Improve display of History

This version add following features:

* New CSS file (261)
* Check install under Windows and Linux (260, 240, 238)
* Review display of Host data (254)
* Add scrollbar for outputs and notes (247)
* Add items for realm and timeperiod (245, 246)
* Review checkboxes of App (242)
* Allow to set/unset active / passive checks (241)

Fix also many bugs.