* move KeyboardShortcutManager, ValidationConverter and ViewState to Calculator
* remove dead code listed in #753
* remove Microsoft.UI.Xaml nuget package from CalcViewModel
* Bound the calendar picker to the control above
* collapsed textbox and added headertext to the calendar picker element
* collpased textbox from both To and From calendar picker used headertext instead
* localized strings for the new headers added for the calendar date pickers
* modified the resoruces file so as to localize the strings
* remapped the grid components after the removal of the text Block
* restored original spacing between components
If we allow users to select texts, the application will feel more like a "Desktop app", will be easier to use on a tablet and users will be more prompt to use Ctrl+C to use the result in another app.
* added bug report and feature request issue tempaltes
* copied pull_request_template.md to .github folder
* Updated the DateCalculation narrator logic to use PropertyChangedCallbacks for the DateResultLabel and DateDiffAllUnitsResultLabel TextBlocks.
* Reverted textblock callback changes and added an event handler for when the radio buttons are checked.
* Revert NarratorAnnouncement.h changes and removed unused code from DataCalculator.xaml.h. Updated comments in RaiseNotification method in DateCalculator.xaml.cpp
* Reverted changes in NarratorAnnouncement.h and NarratorAnnouncement.cpp
* Added SAL annotation to AddSubtractOption_Checked
* Remove namespaces from input types on AddSubtractOption_Checked
