General cleanup, with no substantive changes

Including:
  - clarified the term "Society" to refer to the ESFS
  - languages & address moved to "The Society" section
  - references to "Committee Officers" changed to "Board"
  - resource paragraphs consolidated to a single section
  - "Extraordinary General Meeting" text now under "General Meeting"
  - Board term under "Board", not "Committee"
  - ESFS "Newsletter" & "Directory" replaced by "Website"
  - clarified "Decisions"
  - lots of minor grammar, spelling & punctuation fixes
  - re-enumerate due to changes