more cleanups
add FileContentMock
IncomingDownloads can have a buffer > 1

add testcase for incoming download with buffer > 1
add buffer > 1 to outgoing download
extend test for outgoing download
fix HashFuncWrapper
Fix FileTransferAdapter

The adapter didn't wait untill the complete request has arrived. Now he has a grace time of 300 ms.
some fixes
fix UDP port
UDPAdapter can use other ports

for tesing stuff and so on
Deserializer uses trim() for PeerDiscoveryMsgs
fix in NetCache auto-filelist-download
add GUI callback mock
test HI messages
refactor test name
Merge branch 'master' of github.com:toebbel/buschtrommel