Fix checkstyle warnings
Eclipse formatter: indent with tabs, not spaces
Revert "Fix possible NPE from fcabf976502d2686c4f0c29d046d063d57494ba7"

This reverts commit 62b15bd19af1895dc627a9269b135e7d149ce213. The values
are checked a few lines above, so they can't be null at this point
Remove unused imports
Only allow correct From address through header filter
Add tests for various From header scenarios
Fix identation/whitespace
Clean up what is defined in build.properties and build.xml

build.properties now defines default values for all the variables that
it would make sense to vary locally, and build.xml defines those that
people should probably not mess with.
Test filtering of multiline header with tabs
Test filtering of unknown header
Merge remote-tracking branch 'zidel/from_header_fix'
Update Changelog for merge
Merge remote-tracking branch 'zidel/various_patches'

Conflicts:
	test/org/freenetproject/freemail/MailHeaderFilterTest.java
IMAP: Add [TEXT] in response to BODY[TEXT]

In response to BODY[TEXT] we would only send BODY <string>, not the
correct BODY[TEXT] <string>
Check response to IMAP fetch with BODY.PEEK[TEXT]
IMAP: Don't add [HEADER] to RFC822.HEADER response
IMAP: Add unit tests for parts of the log from bug 6022
Merge remote-tracking branch 'zidel/imap'
Update changelog
Release 23 (0.2.4)