Added support for more languages in keywords extraction
Merge pull request #253 from acz-icm/master

Added support for more languages in keywords extraction
Language identifier and sets of stopwords moved from keywords extraction to commons
Merge branch 'master' of git://github.com/CeON/CoAnSys
Merge pull request #254 from acz-icm/master

Language identifier and stopwords moved to commons
stacked heurs
heuristic in subworkflow
small fixes
file location fixes
modular architecture for heuristic workflow
new hashes, some refactoring
multiple heurs