Unify and substantially simplify the docs and presentation content fetching, and simplify and improve the spreadsheet content fetching.
Unify and substantially simplify the docs and presentation content fetching, and simplify and improve the spreadsheet content fetching.

git-svn-id: c46e06cb57945f24bc44ee3ee8f795d5b6e634f5@63 c4e13eb7-e550-0410-89ee-d7df1d48aa01

nagyistoce/precipitate,ericmckean/precipitate