Fixed a regression from a couple weeks ago
Now alt-clicking a punctum or clicking a syllable will bring up the same
little text box as middle-clicking a punctum, and this text-box is smaller
and resizes itself to fit whatever text you type into it.
Fixed spacing of text when a syllable is followed by empty parentheses.
You can now click on even syllables that are followed by empty parentheses
in the GABC code to edit their GABC.
Fixed some things with editing syllable GABC, mostly with resizing of the little textbox
Started to add syllable text editing similar to syllable GABC editing
Clicking on the text of the chant preview now allows editing of the text.  From here, you can press the up key to edit the GABC code for the syllable.
Added some left and right arrow key functionality to the inline GABC and
syllable editors.
Made the syllable editors right aligned, so that the first syllable looks
reasonable when editing, if there is a big initial.