Rename vague date enums to be more consistent

Rename vague date enums to be more consistent.
Amend output formats and chunk smaller clauses

Amend output formats for dates and IHS codes and chunk the sql clauses
into smaller chunks.
Changes to select query window (CR5)

Changes to select query window (CR5) to reduce window width and limit
width of drop down query value list.
Tweak export window field text

Tweak export window field text to display word 'features' after counter.
Don't export duplicate bap details (FIX046)

Don't export duplicate bap details for same incid (in the same way that
duplicate source details aren't exported).