Using getColumnLabel instead of getColumnName

Using getColumnLabel instead of getColumnName for generating data.frame names of fetched data has the benefit that it respects title specified in AS clauses.
Merge branch 'master' into develop

Conflicts:
	R/class.R
getColumnLabel instead of getColumnName
Added link to rJava page
Refactored java sources
Fixed bugs
Switched to dplyr and rbind_all
Added manuals to repository
Added .Rbuildignore