made some outputs in chat use examine_block

clean up some ------ and ***** seperators
added <hr> tags to divide sections
cleaned up botany plant analyzer text outputs

fixes AIs and borgs having a double "That's Default Cyborg!"
removed some \n newlines
minor code edits

bold names in get_examine_name()
cleaned up plant analyzer output formatting
adjust colors and margins of examine_block class
remove \a from borg examine()