Three interrelated issues:
1) Implement an undo/redo type for renames so that we know to delete
the old lib entry and add a new lib entry
2) When doing so (for the undo/redo OR the original edit), we must
make a copy of the 'original' LIB_PART which is used for revert, and
hand it to the new lib entry
3) When comparing a modified component tree item with the current item
we must also check for aliases.
Fixes: lp:1743857
* https://bugs.launchpad.net/kicad/+bug/1743857
Fixes: lp:1744371
* https://bugs.launchpad.net/kicad/+bug/1744371
Fixes: lp:1744373
* https://bugs.launchpad.net/kicad/+bug/1744373
* Correct all user strings and comments for the correct capitalization of
application names according to JP. They are KiCad, Pcbnew, CvPcb,
Eeschema, and GerbView.
* Add a note the the user interface policy about the correct capitalization.
* Move undo item copy global variable into schematic editor frame object
member variable.
* Add helper methods for accessing the undo item copy member variable.
* Fix undetected bug when changing a text type.
* Added an exchange command to the undo/redo base class for handling undoing
a changed item type which cannot be undone by swapping out the variables.
* Revert change to common/hotkeys_basic.cpp that broke hot key behavior.
* Lots of coding policy changes while making the changes above.
* Move locate function code into schematic screen object.
* Move test for junction needed into schematic screen object.
* Move test for marking connected items into schematic screen object.
* Move delete item function code into schematic screen object.
* Move delete all markers code into schematic screen object.
* Add method for locating multiple items in schematic screen object.
* Fix minor bug in schematic field object hit test declaration.
* Initial encapsulation work on item picker object.
* Remove duplicate doxygen comments from item picker object source file.