Refactor readTopWords to put information in a TopicContainer

=> easier accessible
Add only tweets url content to index if not yet in index

also use only a cleaned version of the url content
Forgot TopicMatcher in refactoring readTopWords
Go on implementing evaluation of topic model

but still need to get an overall score
Go on implementing evaluation of topic model - now first fmeasure calculation

introduce an evaluation result for calculating recall and precision and fmeasure
Output the ignored topics when initializing with tm from day before
Add a boolean variable for easy switch between with and without seeding
Adapt the UrlCollectorMax to need less memory
Implement crawling of language of tweet sample and except certain URLs from crawling
Implement the use of documentFrequencies instead of word frequencies
Fix the printing of type probabilities
Add some lines for experiments for examples in the masters thesis
Implement MassoudiQueryExpansion and make the evaluation more general
Add actual query term to expanded query
Implement the printing of results