CORE-3904 Fixed DataSharingDialog drag-n-drop errors.

Also fixed modal view for DataSharingDialog when launched from DataActionsMenu.(cherry picked from commit 59fea518bcc877daa41a66272febb5b1f0e9c921)
Manage Datalinks option no longer appears when single folder selected(cherry picked from commit a8363a4440127dcae9ed8bec769228885eef9977)
CORE-1402: added a logout success page
(cherry picked from commit 1573ebdb74b5e2411e9d093e7536df020eb5d7c8)
Code cleanup in DataSharingDialog and SharePanel.

Added some missing NON-NLS tags and removed package prefixes from I18N calls.(cherry picked from commit d8e631e61eee34feadf8bf2251416b0911a91131)
CORE-3922 Initial layout refactor for DataSharingDialog.

Refactored the Collaborators panel from DataSharingDialog into a new SelectCollaboratorsDialog.
Added a "Select Collaborators" button to the SharePanel that opens the SelectCollaboratorsDialog where the user can select Collaborators.
Removed drag-n-drop support from DataSharingDialog and SharePanel.(cherry picked from commit 874f4b8c544d53995c1664b114d41a0a7ac3e7aa)
CORE-3922 Refactored EditorTreeGrid in SharePanel to EditorGrid.

Refactored the Sharing EditorTreeGrid in SharePanel into a DataSharing EditorGrid with a CheckBoxSelectionModel.
Refactored the DiskResource List in SharePanel into a FastMap for easier lookups.
Added a USER field to the DataSharing model so that users' names can still display in the grid.
Added a SelectionListener to the SelectCollaboratorsDialog in SharePanel that will add the selected collaborators to the grid with read permissions for each DiskResource.
Added a Cancel button to the DataSharingDialog.(cherry picked from commit f8d6b0a2d8813361d1d726eae9ba11334521afa8)
CORE-3922 Added "varies" I18N display string.(cherry picked from commit 693c9fbcc21c516bd26c488692d2aef1b814eaac)
CORE-3922 Updated layout of DataSharingDialog.

Rearranged the DataSharingDialog into a vertical layout, adjusted its size, and set margins around the data and share panels.
Updated the text in the data panel's header.(cherry picked from commit d84dd19694d3cae291ffaa543f2091871051fbbb)
CORE-3922 Added Cancel button to SelectCollaboratorsDialog.(cherry picked from commit 0cc2ac41da1b1ec257ce6342a65b4d56356095ab)
CORE-3922 Fixed getUpdatedSharingList checks for "varies" permissions.

Updated the loadSharingData method to use a DataSharing copy for display in the grid, since it's display permission may get changed to "varies" in this method, and that value is checked in DataSharing::equals which would cause getUpdatedSharingList to always consider the permissions for that file as updated.
Also updated addCollaborator to use a DataSharing copy for display in the grid, for consistency.
Refactored updatePermissions to not attempt to update the display model in the grid (the EditorGrid will update its models automatically anyway).(cherry picked from commit 24b35624b9ec55dd7cbc4dcb5580a17cb2ba73c3)
CORE-3922 Updated SharePanel text and grid layout.

Changed the "Select Collaborators" button to "Add Collaborators" and updated the instructions in the grid's empty text to refer to this button.
Changed the empty text in the bulk permissions combo box to "Change Permissions".
Updated the grid to force-fit.(cherry picked from commit 167bfd9f85b36af78aefc5bc3d8018245ecff605)
CORE-3922 Added ShareBreakdownDialog for the SharePanel.

Added a "Visibility Varies" label with an "Explain" button to the SharePanel's toolbar that is only shown when a user in the grid does not have uniform permissions on all selected files.
The "Explain" button opens the ShareBreakdownDialog that shows individual shares grouped by either user or data/disk resource.
The "Explain" panel becomes hidden once all users in the SharePanel's grid have uniform permissions for all selected resources.(cherry picked from commit 2291ec9d0861ff30ff414ae9a0d9734dc9d99956)
CORE-3922 Removed unused method from SharePanel.(cherry picked from commit a7e653e07eb6dedb2fa61204988fccfcf541bce7)
CORE-3922 Added unshare button to SharePanel grid rows.

Refactored removeModels into removeModel.(cherry picked from commit 4899c900c073ad23acfb568607cf2c87a35e9914)
CORE-3922 Removed bulk actions from SharePanel.

Removed the Unshare button and Change Permissions combo bulk actions from the SharePanel's toolbar.
Also removed the CheckBoxSelectionModel plugin from the grid since there are no more selection actions available.(cherry picked from commit 37ab9f36cf776bfacaa593524d0a10563971537c)
Added a search RPC proxy for use with GXT list stores
(cherry picked from commit edfdd1c079cff1564f4dc0d39b642c1b8589384a)
CORE-3922 Updated CollaboratorsUtil to fire events on add and remove.

Added CollaboratorsAddedEvent, CollaboratorsRemovedEvent, and associated Handler interfaces.
Updated CollaboratorsDialog to use a standard size no matter where its launched from.
(cherry picked from commit fad44a62252813ca6b18968acd2711f1dbd85637)
CORE-3922 Added Manage Collabs button to SelectCollaboratorsDialog.

Added a button to the bottom toolbar of the SelectCollaboratorsDialog that opens the Collaborators management dialog.
Added event handlers to the SelectCollaboratorsDialog so that its grid is updated on collaborator added and remove events.
Updated the SelectCollaboratorsDialog grid's empty text with instructions to use the "Manage Collaborators" button.
(cherry picked from commit b339f414d2d50e7a9da52ab421acacd0c448bb2a)
Added the User search combo box(cherry picked from commit deac4e709888e3fbc9fb35870558fa81386efbf7)
Finalized and integrated the User search box into the Sharing dialog.(cherry picked from commit ab974f5442bf66a9a2b269929f64ff3039b40521)