CMake make test executable function now support QT_VERSION for Qt 4 and
5.

Separated the TEST_FILES for Qt5 into a new QT5_TEST_FILES

Separates the current function call for building the Qt 4 and 5 libraries into two
separate function calls - for Qt4 and Qt5. The Qt5 call only includes
files that are necessary for successful compilation.

Tabs have been removed from the file and replaced with 2 spaces.

Use the new PythonInterfaceCore library to avoid code
duplication.

Improve function names, move definitions to a cpp file and add unit tests

Re #17029

- Reorgranised JobTreeView page.
- Added documentation + example for filtering.
- Moved RowPredicate into its own header.

Re #22263

Re #22263

- Moved methods for operating on QStandardItem/Cell objects + custom role
  enum to CellStandardItem.h/cpp.
- Increased CellDelegate's awareness of custom roles.
- Changed storage-duration of QtFilterLeafNodes to automatic.
- Used new functionality to perform padding of group rows - this
  functionality should be moved into JobTreeView in a later commit.

Re #22263

- As above.
- Implemented operator !=

Re #22263

- Used QtFilterLeafNodes as a proxy model over the real model.
- Added strongly typed QModelIndexes based on StrictModelIndex template.
- Added methods and refactored code to handle conversions between
  different model index spaces correctly - strict QModelIndex classes
  help to enforce this.
- Refactored QtStandardItemTreeAdapter to be a set of methods rather
  than a class - a different logical grouping may follow.
- Added filterRowsBy methods to set the filter predicate and
  resetFilter method to switch to a true-predicate.
- Exposed this filtering functionality to python.
- Split QtTreeCursorNavigation into additional header QtBasicNavigation.
- Moved RowLocation -> QModelIndex and QModelIndex -> RowLocation
  conversion logic into RowLocationAdapter class to allow re-use in other
  contexts such as QtFilterLeafNodes.

Re #22263

- Added BuildSubtreeTest - a replacement for the messy version in JobTreeView.
- Added additional methods for dealing with Subtree objects.
- Modified interface of the copy and paste signals presenters must now
  get selection explicitly.
- Exposed Row class to python.

Re #22263

- Added a new header SIPVector which holds a generalised version of the
  vector binding and bindings for things like boost::optional.
- These should probably be moved into their own headers in a later
  commit.
- Moved as much code out of vector.sip as possible.
- Mappings for types required to export replaceRows and functionality required for
  copy and paste should now be in place.

- Refactored FindSubtreeRoots.
- Added Row class.

Re #22263

- Replaces splitOnRootNodes from RowLocation.
- Will be used to implement replaceRows for Copy and Paste in
JobTreeView.
- Added additional methods for traversing the 'tree' created by
RowLocations.
- Some tidying and bug fixing still needed.

Re #22263.

- Added a QStyledItemDelagate.
- Created and set inside JobTreeView.

Re #22263

Re #22263

- Added bindings in SIP definition file.
- Added JobTreeViewSignalAdapter which converts method calls on the
base class JobTreeViewSubscriber into signals.
- Added SIP bindings for std::string, std::vector and specializations
of std::vector.

Re #22263

Re #22263

- Added a modified version of JobTreeView from the
  batch_widget_prototype branch
- Refactored out QtStandardItemTreeAdapter which can be tested
  separately from the view.
- Also transfered QtTreeCursorNavigation, the class used to implement
  the tab based navigation.

Re #22263

- Added RowLocation class for storing paths to nodes in the BatchWidget.
- Added description as a concept in new dev-docs page for BatchWidget.

Re #22263

# Please enter a commit message to explain why this merge is necessary,
# especially if it merges an updated upstream into a topic branch.
#
# Lines starting with '#' will be ignored, and an empty message aborts
# the commit.

Re #20088

- RowData is now a class which wraps a QStringList (rather than just a plain QStringList)
- Processing options are stored as metadata and cached after running reduceRow

Re #20088

Required to override Context menu population

Refs #21442

Refs #20251

Refs #21442

Refs #21442

Also covers the start of constructing MantidTreeWidget from workbench

Refs #21442