Clear DB on upgrade. Fix DB query for all folders.
Extra documentation on sqlite quirks.
Merge pull request #218 from ojiikun/master

Ensure All Stories Heading Always Appears
Merge branch 'master' into circular

# By ojiikun
# Via Samuel Clay (1) and ojiikun (1)
* master:
  Extra documentation on sqlite quirks.
  Clear DB on upgrade. Fix DB query for all folders.
Adding Open in Safari UIActivity. Total hack on ShareThis library, but it's so necessary it hurts a little less. Thanks again to @pbones for making this happen.