Gns3-gui

* Fix issue with PyPi

* Rebase Qcow2 disks when starting a VM if needed
* Docker support
* import / export portable projects (.gns3project)

* Fix a typo in qemu preferences
* Fix upload of large image to the VM
* Reduce the number of connection tries from 120 to 40 when connecting the GNS3 server running inside the GNS3 VM.
* Include link to the GNS3 academy. Fixes 1178.
* Snapback feature for port labels. Fixes 1182.
* Prevent users to select VirtualBox.exe instead of VBoxManage.exe. Fixes 1195.
* Improve the vmrun error message
* If we can not read the registry try to guess vmware type from vmrun path
* Ensure that you can not duplicate an interface in a cloud
* Disallow removal of link of running emulator without support of hotlink
* Check PyQT version support dev version
* Show server CPU usage if it's 0
* Clear warnings about using linked clones with VMware Player.
* Double click center on link
* Double click on an element in topology summary center the view on it
* Fix a very very rare crash when closing a project
* Avoid a small blink of the waiting text
* Fix a crash with image item
* Show a symbol in the middle of the link when packet capturing is activated. Ref 789.
* GNS3 doctor: check if the NPF service is running. Fixes 1124.
* Fixes progress dialog is None in accept()
* Fix another race conditions in progress dialog
* Replace the installation instructions by a link to the doc

* Change some sentences.
* Sort snapshots by date
* Block save as and snapshot when a device is running
* If you hit enter in the new project dialog it's work
* Display upload size during progress
* This should avoid blinking dialog. And display better progress
* SetupWizard: limit the number of vCPUs for the GNS3 VM to the number of physical cores.
* Remove blocking code. Ref 1109.
* Fixes "QThread: Destroyed while thread is still running",
* Add a timeout when you are not able to join the remote server
* Remove bad smell from progress dialog and handle ESC key
* Remove root required messages in cloud node. Ref 608.
* Show a warning when the GUI is run with root rights. Fixes 608.
* Change message when closing GNS3 with running device.
* Ask the user to stop device before closing
* At startup display a warning if another GUI is already running
* Fix a crash if you delete a file while refreshing the list of appliances
* Fix double opening of serial console
* Always ask the server for builtin
* Improve detection of vmrun on OSX
* Delete image from images dir when no longer need
* Sort node name in topology summary
* Allow to show a message box for test without starting GNS3
* Drop licence for paramiko since we no longer use it

* Fix crash when selecting no image in GNS3A but clicking on Download
* Fix crash when you have a file size None (testing a new gns3a)
* Prevent the progress dialog to cancel the GNS3VM when it's finish
* Add a command show gns3vm to get the GNS3 VM statusM
* Prevent setup wizard to appear if VM is running
* Display error dialog if a custom console is invalid
* Crash when you import GNS3A just after installing gns3 Fix 1063
* Change the way we check is setup wizard has been turned off Fix 1071
* Do not failed if GNS3 VM server has an incorrect version
* Include the output from vmrun or VBoxManage when they return an error code.
* Fixes bug that forced the GNS3 VM running in VirtualBox to restart even if no preferences had been changed.
* Allows to cancel the progress dialog when GNS3 tries to contact the server running in the GNS3 VM.
* Ask user to upgrade via the VM menu

* Allow idlepc 0x0 in topology
* Show an explicit error message when status code 0 is returned. Fixes 1034.
* Fixes minor bug when dropping a VirtualBox VM on the scene. Fixes 748.
* Correctly check local server if only local is available in vm wizard
* Make the GNS3 VM server running value more reliable
* Make VM configuration dialog modal
* Cannot take GIF screenshots (write is not supported by Qt).