Raise version to v 1.2.4

Use new configuration API. f978cd1
Enclose all ID constants into  for uniform handling 188345c
Remove invocation of callback functions. d191e98
rename typoscript config files to new naming scheme. 4e2028d
Add typoscript config for matomo and openwebanalytics. 248debf
 Thanks to Christian Welzel (https://github.com/sir-gawain)