Added ReSpec class 'removeOnSave' to some of the mapping table UI.

This will remove mapping table buttons when using ReSpec's "Save snapshot" facility.
This avoids saving those buttons in the snapshot and subsequently having two copies of them when the snapshot is loaded and the mapping table code generates the buttons on load.
Merge pull request #1 from klown/master

Added ReSpec class 'removeOnSave' to some of the mapping table UI.