Made a helper to unify the HTTP requests code
Finished the crawler for the Corte Constitucional and changed the document interface to copwe with cases when a single "document" is composed of many "subdocuments", e.g "Las tutelas tienen sentencias y tutelas que son documentos sobre el mismo asunto pero con distinta estructura"
Housekeeping
Merge branch 'master' of https://github.com/saaperezru/RealityAnalytics

Conflicts:
	pom.xml
	src/main/java/tabloide/crawlers/implementations/CrawlerRSSElTiempo.java
	src/main/java/tabloide/datamodel/Document.java