add bibdk_subject_hierarchy to makefile and install
add update hook for bibdk_subject_hierarchy and enable help module
tags updated
updated to version 7.x-0.38
fix encoding error
Merge branch 'develop' into feature/1207_full

# By Søren Vibjerg (3) and JrgenGNielsen (2)
# Via Søren Vibjerg
* develop:
  fix encoding error
  updated to version 7.x-0.38
  tags updated
  add update hook for bibdk_subject_hierarchy and enable help module
  add bibdk_subject_hierarchy to makefile and install

Conflicts:
	bibdk.make