CA-139888: Changing window size should not change the number of items minimized in Outlook-style navigation panel

This fixes the following problem:
When the main window is resized, we set the minimum width of the right side panel (Panel2MinSize) to half the size of the window so that the tab contents are visible. This is fine on most situations, but on a higher screen resolution (e.g. 1920x1080) the following problem occurs:
- starting with the main window at minimum size, when the window is maximized, the Panel2MinSize is set to half window's size (e.g. 960)
- when the main window is restored back to the minimum size, the split container is not resized because there is a conflict between Panel2MinSize and the size of the window itself (Panel1MinSize + Panel2MinSize > window's width)
- therefore the navigation panel is not visible and also the content of the tab control may appear out of scale.

To fix this, we set the Panel2MinSize to half of the window's minimum width. This way the right side panel will always fit in the window, including when it is restored to minimum size.
This also fixes [CA-137956] - Restoring Maximised XenCenter does not resize the main panel properly.

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
CA-118423: Fix the issue where a non-management bond was shown as disconnected in XenCenter because the NICs tab was not refreshed when the properties of the new bond changed.

- Register a PIF CollectionChanged event, so the page is refreshed when a bond is added / deleted.
- Register the PIF PropertyChanged event to each PIF when the grid is populated; this ensures that all the PIFs displayed will be refreshed when their properties change.

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
CA-138822: Improvements to the Host/Pool Storage tab, following on from the TRIM work

- Make "Reclaim freed space" a CommandButton (will appear as disabled if the command cannot execute)
- Add tooltip to "Reclaim freed space" button to show the reason it is disabled
- Hide "Reclaim freed space" button on old servers
- Allow multiselect
- "Reclaim freed space" button enabled if at least one SR can be trimmed

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
CA-138293: Added CPU information (number of vCPUs and cores-per-socket) to the VM General tab

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
CA-108379: Hotfix prechecks encourage VMs to be suspended unnecessarily if HA is enabled - Fixed

- Added three Warning classes (HAEnabledWarning, WLBEnabledWarning, HostNotLiveWarning), used in the Pre-checks page of the Install wizard (also in the Rolling Pool Upgrade wizard) to indicate that a check was skipped and the reason why.
- If HA or WLB is on, we show this as an error in the "HA and WLB status" check and the "VM migration status" checks will be skipped (with a warning displayed) for all the hosts in the pool.
- Similarly, if a host if unreachable, we show this as an error in the "Host liveness status" check and the following checks for that host will be skipped (and warning displayed).

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
Merge pull request #119 from MihaelaStoica/CA-139888

CA-139888: Changing window size should not change the number of items mi...
Merge pull request #122 from MihaelaStoica/CA-118423

CA-118423: Fix the issue where a non-management bond was shown as discon...
Merge pull request #123 from MihaelaStoica/CA-138822

CA-138822: Improvements to the Host/Pool Storage tab, following on from ...
Merge pull request #126 from MihaelaStoica/CA-138293

CA-138293: Added CPU information (number of vCPUs and cores-per-socket) ...
CA-108379: Hotfix prechecks encourage VMs to be suspended unnecessarily if HA is enabled - Fixed

- Added the "host not live" check and warning to the StorageLink status check

Signed-off-by: Mihaela Stoica <mihaela.stoica@citrix.com>
Merge pull request #127 from MihaelaStoica/CA-108379

CA-108379: Hotfix prechecks encourage VMs to be suspended unnecessarily ...
Merge branch 'xs64bit' of https://github.com/xenserver/xenadmin into xs64bit-CA-137306

Conflicts:
	XenModel/FriendlyNames.resx