Merge pull request #66 from philrandal/master

MSRE - Properly handle non-existent $_POST variables, fix "and" handling
Merge pull request #67 from philrandal/master

MSRE - strip spaces from Target fields, ensure validly formed rules only
Merge pull request #69 from philrandal/master

Fix misspellings of SpamAssassin
Merge branch 'master' of https://github.com/philrandal/1.2.0
Fix Issues #25 and #68

Fix Issue #25: menu wraparound

Fix Issue #68: alternating background colours for lists