Thank you for the fast reply!
Here are some resource-full links:
License Floris Mod
http://forums.taleworlds.com/index.php/topic,148140.msg3589074.html#msg3589074
Source Floris Mod
http://www.nexusmods.com/mbwarband/mods/3489/?tab=2&navtag=http%3A%2F%2Fwww.nexusmods.com%2Fmbwarband%2Fajax%2Fmodfiles%2F%3Fid%3D3489&pUp=1
License Warband Script Enhancer 1.66
I think there is no license, but I remember it was marked as WTFPL
Source Warband Script Enhancer 1.66
https://bitbucket.org/Ruslan_K700/warband-script-enhancer/
Source and License Battle Time 1.31 for Warband 1.143
http://www.mbrepository.com/file.php?id=2702
napoletano: Battle-time + Diplomacy for 1.153
http://forums.taleworlds.com/index.php/topic,150827.720.html
Floris-Mod is something like an extension of the Diplomacy-Mod. It has many elements from it, but also from many other mods. Therefore I prefer Floris-Mod.
If I find time, too, I will also start somehow to merge these mods (and ask also for permission of some content creator in Floris-Pack or remove/replace it). If someone also like doing it or already is doing this, it would be helpful, to post the repositories (for free on github & Co) and invite other for developing it further. Who knows, maybe we manage to make Warband completely Campaign-Multiplayer-able