Merge pull request #58 from stefan-karg/master

ADD: Receive message and check consistency module input/output refined. / Modification of radio-packet-type structure.
CalculateTrainPosition, BG_Types/BG_Types_Pkg.xscade, TrainPosition_Types/TrainPosition_Types_Pck.xscade: interface and type definitions modified

Signed-off-by: UweSteinkeFromSiemens <uwe.steinke@siemens.com>
Lock files removed

Signed-off-by: UweSteinkeFromSiemens <uwe.steinke@siemens.com>
adopted models according to the changes made by Uwe
Updates on API section
Rearrange LevelFilter diagram
Add simple FirstFilter
Add first version of ThirdFilter
Missing operator file added
Transfer of Types from selectUseableInfo to Types module
Merge branch 'master' of https://github.com/openETCS/modeling