utility functions for simple HTML tasks
navbar()style(...)
ol(...)
ul(...)
li(...)
b(...)
u(...)
small(...)
big(text = NULL)
center(text = NULL)
GenEstInlineCSS(...)
GenEstShinyJS(...)
cButtonStyle(buttonType = "single")
attributes and children of the element
text to wrap in the tag
"single" (for clearing a single component) or "all" (for clearing everything).