Load up to 4096 characters in formatter creating reply/forward messages.
Load up to 4096 characters in formatter creating reply/forward messages.

* src/modest-formatter.c (extract_text): extract up to 4096 characters
  for creating reply/forward messages. This should limit problems
  creating derivated big messages (fixes NB#116091).

community-ssu/modest,community-ssu/modest,community-ssu/modest,community-ssu/modest