add few tests for send message
add few tests for send action
minor fix of send action test
Merge branch 'sk8ter-master'
Remove broken tests
Merge branch 'pippijn-master'

Conflicts:
	src/test/java/im/tox/tox4j/ToxCoreTest.java
Fix sign-compare warning for tox_file_data_size
Merge branch 'master' of https://github.com/sonOfRa/tox4j
Connection state can change a number of times.

But it only changes from connected to disconnected, never from connected
to connected or disconnected to disconnected.