Merge branch 'master' into fix-tm

Conflicts:
	syncany-plugins/syncany-plugin-ftp/build.gradle
	syncany-plugins/syncany-plugin-sftp/src/test/java/org/syncany/connection/plugin/sftp/SftpConnectionPluginTest.java
Merge branch 'master' into fix-tm
simplify TransferManager.test()
Merge branch 'master' into fix-tm
update webdav
add boolean to TransferManager.test()
FileUtil getParentPath method + tests
TransferManager correction
Merge branch 'fix-tm' into gui
update messages
refactor handleTest into RepositorySelectionPanel instead of each plugin panel
clean gui/FileUtil class to decouple from Swt ==> should be integrated into util/FileUtil