Updated .travis.yml file
Updated Apache Tika to 1.3
Removed ApacheTika as Language Detector. Right now works with "langdect".
Modified weights of TokenizerEnhancer and LuceneEnhancer
Other minor changes
Solved Bug that eliminates single-word keywords in TokenizerEnhancer
Solved Bug in CoreConfiguration that prevented loading lists from property files
Merge branch 'langdetect' into develop