fixed infinite refresh bug

Change-Id: I89018351ccfd28dcdccbe48bbb8198afadadc4b3
Deprecated manifest table in favor of using "entityType" as public
metadata. Fixed bugs in EntityCache related to refreshing & reusing entity ids.
Moved EntityCache and related classes to WeaveData project.
WeaveDataSource no longer builds XML hierarchy (TODO: use EntityTree).
Generalized EntityTree and EntityTreeDataDescriptor to use
IEntityTreeNode interface.
Implemented DataSourceTreeNode for top-level multi-datasource
EntityTree.
Implemented EntityHierarchySelector with two-pane view.
Fixed server-side null pointer errors.
No longer hiding hierarchy editor by default in Admin Console.
Added IDataSource.refreshHierarchy().
DynamicColumnEditor now uses HierarchyExplorer.
Moved deprecated IDataSource functions to IDataSource_old.
getHierarchyInfo() now supports arbitrary metadata search.
Attribute selector now supports multiple selection.
Renamed EntityTree -> WeaveTree, IEntityTreeNode -> IWeaveTreeNode,
EntityTreeDataDescriptor -> WeaveTreeDataDescriptor.
Created SQLUtils.WhereClauseBuilder with support for specifying wildcard
comparisons.
Updated documentation.
Remote entity wildcard search is now working.
Services now limit the maximum number of entities that can be requested
at a time to 1000.
Now hiding columns in MetadataManager that do not match search.
EntityNode now propagates its filter function to child nodes.
Fixed infinite refresh bug when searching for an entity id that does not
exist.