Rename "Conversion Modifier" to "Option"

"Option" text aligns with the logback manual. Plus, it's nice and
simple (easy to type).
Fix parser for patterns w/multiple options (#1)

The pattern parser failed (returned invalid results) when trying to
parse layout patterns containing multiple conversion words that have
options. This was mainly due to greedy regex patterns for "group" and
"option"; and to incorrect post-match parsing.

This patch fixes the regex patterns and the post-match parsing. A unit
test was also added to test for this specific problem.
Update all dependency versions in POM
Resolve deprecated class refs for named-regexp
Tweak pom settings

Bump versions for compiler and surefire. Tweak surefire settings and
redirect test output to file to minimize noise on command line.