action for debug info
more informative exception handling and additional logging in SpellChecker
rearranged build tasks; modifications on Indexer; seperate logging for the indexing process
* moved all database and Lucene index-related maintenance tasks to the :backend/tools subproject
* railsServer and railsConsole will now honour the env system property in addition to 'RAILS_ENV' when deciding their Rails.env
* modified some C#-style naming to Java-style
* introduced a seperate logger to trace the preprocessing steps
generalised expected results so that the test can complete successfully for the fixture data and for Georges data slice we can import for the text environment
ammend: additional more code cosmetics
simplified the code, ensured reuse of regexp pattern that are compiled once, moved language filterung of tokens out of the Tokenizer, since it's a separate concern
updated .gitignore
Merge branch 'improvements'

Conflicts:
	backend/src/main/java/de/fusionfactory/index_vivus/indexer/Indexer.java
	backend/src/main/java/de/fusionfactory/index_vivus/indexer/main.java
	backend/src/main/java/de/fusionfactory/index_vivus/language_lookup/Lookup.java
	backend/src/main/java/de/fusionfactory/index_vivus/language_lookup/Methods/StemmedWordListLookup.java
	backend/tools/build.gradle
corrected debug message
removed duplicate class from merge after renaming package 'Methods' to 'methods'
completing merge for Lookup (with method names corrected to Java conventions)
integrated search method for a fixed set of most relevant documents with another method of paginated search used by the FulltextSearchService
updated .gitignore: some additional ignores for the files resulting from static compilation of the assets and related intermediate cache files
added parameter validation for the requested page (1 <= page <= max. possible number of pages for request)
harmonized environment detection for the railsCmd task with the behaviour for railsServer and railsConsole (i.e. now also hnours env.test when determining the Rails.env)
update production environment configuration for Rails: serve the static assets also via the Rails Server
(This application will presumably not be deployed behind an independent HTTP-Server for a while.)
a duplicate-free less verbose/neutral configuration for log4j
Merge remote-tracking branch 'origin/master'

Conflicts:
	backend/src/main/java/de/fusionfactory/index_vivus/indexer/Indexer.java
increased memory allowances for rails processes
ensure sound default for page and items per page for the fulltext search if the corresponding params are absent