- add button to richtexteditor for angled brackets
- add button to richtexteditor for angled brackets
- richtexteditor: unified angledbracketleft,angledbracketright plugins
in angledbrackets plugin
- richtexteditor: add shortcuts for print, strike, highlightText,
angledbracketleft, angledbracketright
- richtexteditor: show shortcuts in button tooltip
- richtexteditor: refactor bibiscospell plugin
richtexteditor: show shortcuts in button tooltip