Minor updates and missing functions

fixed some text in site_news block;
truncate dynamic_users_blocks
set relationship change message to be usable for non subscribes.
Move js file load in the comments template

JS needs to be loaded by template rather than pl files as it is called
from more hethan article.pl and comments.pl (journals.pl pollboth.pl)
Fix sow_message template

setReaded was sending back a return =1 which was being displayed.  Used
CALL to suppress output.
missing closing tag on message_body div.
fix margin error that was breaking borders on div
Implement Threshold/Breakthrough boxes, correct Improved Threading behavior
to respect Breakthough, not Threshold

Signed-off-by: Michael Casadevall <mcasadevall@soylentnews.org>
Merge pull request #210 from paulej72/master

Fix pollboth ImpThread issue and DB stuff missing from site update.
Merge branch 'master' of github.com:SoylentNews/slashcode
Revert Comments.pm to older version

and minor of on comments.css
Merge pull request #211 from paulej72/master

Revert Comments.pm to older version