- Fixed SubframeHome unit cell not updating correctly

- Fixed SubframeHome unit cell not updating correctly

- UnitCells are now stored in a vector rather than a map, so check for
  existing name is no longer necessary
- Reworked QComboBox for unit cells due to possibility of name clash
- Implemented global refresh for UnitCell combo boxes

- Fix OMP segfault during refinement

- Added controls to GUI to switch between cells from last refinement and cell from autoindexer
- Unit cell are chosen per batch according to which unit cell is assigned to the most peaks in that batch

- now all core algorithms have their own objects contained in Experiment
- shared pointers to paramter sets replaced with unique pointers contained in their respective objects, rather than in Experiment
- Refactored Experiment and GUI for consistency across all core modules.

- refactored refiner such that it can be instantiated with Experiment
- Parameters for refiner can now be set at any time

- made parameter setting/getting consistent across Subframes
- Parameter values now saved centrally with no duplication, saved across refreshes.

- Improved parameter passing from core to GUI
- Changed some default values
- Reduced number of decimal places in many spin boxes

- Refiner tables now reflect changes in InstrumentStates post-refinement
- Tidied layout of SubframeRefiner
- Removed more text dumped to stdout
- Refactored Refiner for consistency and to work better with GUI

- New per-batch cells are owned by UnitCellHandler

- added some logging
- added script for testing refiner