Add three buttons on Panel
to get new GUI--buttons on top
Able to release/undo-release a poem
NOTE: need to fix the problem in setReleaseLocation(Row r) -- currently, the new Y is too large, poem would "disappear"
Able to submit a poem as ser and txt (email is in code bu commented).
NOTE: need to implement correct mechanism to set the selectedPoem -- currently it's always the first poem
Merge remote-tracking branch 'remotes/origin/Kuan3' into Jun3

Conflicts:
	cs509_cyberPoetrySlam/src/Words/model/Poem.java