frontend styling
Merge branch 'master' into feature/frontend-CSS-styling
add icons
Merge branch 'develop' into feature/frontend-CSS-styling
Merge branch 'develop' into feature/frontend-CSS-styling
fixed dependeny issue for core dpus
Merge branch 'develop' into feature/frontend-CSS-styling
merged develop into feature/frontend-CSS-styling
Merge branch 'develop' into feature/frontend-CSS-styling

Conflicts:
	frontend/src/main/webapp/VAADIN/themes/UnifiedViewsTheme/styles.css
update plugin-devenv
fixed wrongly merged code
Merge branch 'develop' into feature/frontend-CSS-styling

* develop:
  latest version plugindevenv submodule linked
  469 change of name  for export xml file
  update dpu-core pom file for deployment
  update dpu-core-base pom file for deployment
  update of plugin-devenv
  469 after merge fix, null checks for setting descr and raw conf
  512,513,514 import / export dpu template(s)
529 bugfix: row stretching caused by using SVG images
Merge branch 'develop' into feature/frontend-CSS-styling

* develop:
  #160 fix: namber of table rows in 'DPU instances' from settings
  Fixing #125 Data Lost by warning user and terminating pipeline
  Local rdf enabled query browser
  bugfix: wrong equals - returned always false
  bugfix: wrong equals - returned always false
  remove mff thirdparty repository
  528 bugfix importing dpu with different version caused error, fixed bug when child dpu was created after importing dpu from the same zip twice
Merge branch 'feature/frontend-CSS-styling' into develop