fix: column families script
cherry-pick: tracing and cleaning
update: upgrade cassandra driver version to 2.0
add guava and update to java 1.7
refactor tests
remove: cluster folder
skip: javadoc generation
format: script
add pagination test and use BDD form
update: log4j format
add: tracing enabled test
update: cassandra java driver version to 2.0.0
fix: increase TTL timeout and fetch all rows
fix: cassandra driver parent pom version
Merge branch 'workshop-solution'

Conflicts:
	src/main/java/fr/xebia/xke/cassandra/CassandraRepository.java
	src/test/java/fr/xebia/xke/cassandra/CassandraRepositoryTest.java
	src/test/resources/scripts/column_families.txt
remove: solution
fix: cluster close connection