adds initial test structure (#1)
refactors imap connector to be unit-testable, update mock objects (#1)
fixes multiline-bug in MessageHeaderFactory
uses 'iconv_mime_decode_headers()' to decode mime headers
removes obsolete methods in MessageHeaderFactory
adds message-fixtures, uses fixtures in MessageHeaderFactoryTest, removes obsolete comments in ImapConnector, adds some basic test stuff
Merge branch 'master' of github.com:soeren-helbig/DigitalshiftMailboxClientBundle