Add new tag pair and parameters to standard tag pair

Also add prefixing to all tag pairs.
Remove nested tag pair and provision standard tag pair with nested variable data
Add documentation to Plugin file for display in EE CP
Update README.md
Update docs in plugin file
Add fixed="yes" parameter
Change version to 1.1.0

Update private functions to use underscores

Update && in if statements to use "and" to be consistent with Caddis standards