maven compiler defaults changed to 1.7
added contracts/types, new execution plan. basic sentence/identifier matching for later improvement
join sequences of words by their pos-tags together
revision increment
Added kernel step and refactored the execution plan
no need to create new sentences
scoring algorithm completed, added a relation type to hold the results, reorganized flow of the program
addition to the blacklist
cleaning up
swapped factors
bugfix: $ and backslashes blacklisted
readme updated, default parameter values changed
typo
updated the nephele config for a dual core setup
reformatted the gaussian function and the parameter c
extended filters, fixed some serialization issues
version bump, added document ids to the relation
added a unittest for identifier detection
typo fixed
Merge remote-tracking branch 'remotes/upstream/develop' into develop

Conflicts:
	.gitignore
	cluster-run.sh
	pom.xml
	src/main/java/cc/clabs/stratosphere/mlp/WikiParser.java
	src/main/java/cc/clabs/stratosphere/mlp/types/WikiDocument.java
	src/main/java/cc/clabs/stratosphere/mlp/utils/TexIdentifierExtractor.java