This reverts commit 971a3540.

This reverts commit 721fd7e3

This reverts commit f64d31a2.

This reverts commit ee0222a0

This reverts commit 1afda157.

This reverts commit 8eff863e

This reverts commit 50458553.

This reverts commit 815efc9b

This reverts commit 1316ac12

This reverts merge request !115

* a few commits in pynn-brainscales (2), grenade (2), halco (2), hxcomm
  (2), haldls (1), hwdb (1)
  * add interface-draft for plasticity rules
  * support for requestion server-side information
    (`get_bitfile_info` and `get_repo_state`)
* also cleans up the tag mess in the dependent repositories…
  really same tag everywhere
* same for oppulance; as software state didn't change, we don't require
  oppulance to match pynn-brainscales version (rc2 is sufficient)…
  relaxing constraint, rc2