error in heading format
closed #108
again some corrections (paragraph missing EOL, typo in "interval" etc.)
Merge branch 'master' of https://github.com/aim42/aim42

# By Alexander Heusingfeld (13) and rschimmack (1)
# Via Alexander Heusingfeld
* 'master' of https://github.com/aim42/aim42:
  updated pattern diagrams
  Word phrases enclosed in single quote characters weren't emphasized.
  First version of improve-pattern-conceptmap
  Related practices for ISP
  added reference to "Never Change a running system"
  fixed alphabetical sorting
  fixed outdated formatting
  Updated relations
  removed broken link to "Quality-Function-Deployment"
  Fixed #103: Included refactoring.com
  Removed "Limit Feature by Client" as it duplicates "Interface Segregation Principle"
  rollback to gradle 1.10
  Adjusted heading hierarchy in "Improve" section
  Upgrade to asciidoctor 1.5.0