CORE: radioactivity settings and field
Revert "CORE: radioactivity settings and field"

This reverts commit 6d0e44467c525507cc5456ad618178bf46eafa0e.
core: radioactivity field and decay profile added
MISC: updated description
MISC: removed swp file
MISC

removed field_tag as base of wiki
MISC:  swapped field_tag for field_tags , and dependency to ixm vocab tags field
MISC: remove swp
Merge pull request #6 from emmairwin/radioactivity

CORE:  adding radioactivity file and settings