By actually storing the documents instead of only the root and id
environments.

Filtering them out has long since become unnecessary. It was used back
when JS files were sourced from Script elements - there they'd only
make the functions available. Now functions and variables are imported.

Task-number: QTCREATORBUG-1735
Reviewed-by: Erik Verbruggen

Task-number: QTCREATORBUG-1021
Reviewed-by: Roberto Raggi

If a document wasn't parsed correctly the binder won't be run - and
rootObjectValue will be null.

Task-number: QTCREATORBUG-1449

Reviewed-by: ossi

This used to contain all functions declared in Script blocks. With them
gone, there's no reason to keep it.

They had not yet been updated to the new way of importing javascript.

Reviewed-by: Erik Verbruggen

Use ScopeBuilder.push(...) for the same functionality.

Reviewed-by: Erik Verbruggen

Task-number: QTCREATORBUG-1021
Reviewed-by: Erik Verbruggen

Also change the filename->document map to a hash.

Reviewed-by: Roberto Raggi

Reviewed-by: ckamm

Avoids bug where import errors would show up in all files.

Reviewed-by: Roberto Raggi

Task-number: QTCREATORBUG-926
Reviewed-by: Erik Verbruggen

Task-number: QTCREATORBUG-874
Reviewed-by: Erik Verbruggen

Reviewed-by: Erik Verbruggen

However, it still re-reads for each use of Link. Needs to be optimized.

Reviewed-by: Roberto Raggi

* Fill the snapshot with files that could be imported.
* Implement package imports.

* The qmldir file is not parsed yet.

Reviewed-by: Erik Verbruggen

This bug manifested itself as not getting a tooltip and correct context
help for the type of the root object in a Qml file.

* The "Script" type is now implicitly available without imports.
* No errors for bindings inside a Connections element.

Reviewed-by: Roberto Raggi

Just the declaring member isn't enough.

Instead of only maintaining a flat list of scopes, actually store the
global, component chain, root object, scope object, function, id and js
scopes separately.

* Add SemanticHighlighter to QmlJSTextEditor to update the semantic info
  in a background thread.
* Add QmlJS::Check to run semantic checks on qml and js documents.
* Add a check for incorrect property names.
* Fix hoverhandler to show tool tips from extra selections over help
  tooltips.

* For JS files: Add each Qml component that sources the file in a Script
  tag to the scope chain.
* For Qml components: Add each component that instantiates the component
  to the scope chain.
* Generate the full list of documents required for completion in a
  given file. Previously, files that included the file were missing.