Jermolene/TiddlyWiki5 — pull request #964 by simonbaird (2014-10-11 15:51:55+00:00)
Title: Add span wrapper around button caption text

Reasons:
- can show or hide the button text with CSS (assuming
tv-config-toolbar-text is yes).
- can have different looking buttons in the page controls versus the
view toolbar, etc
- more flexibility styling the button appearance, for example you
can change the text size compared to the icon size
- button appearance is more themeable