Parser integration #1 test
selection clauses and expressions
moved negation from expressions to clauses
init queryExec, moved init,offset,label to properties class
"Grammar enlarged, interface changed"
"Add getters to ProjectionCell"
Merge branch 'parser' into feature/db-selection
"Able to fill ProjectionCell with data"
Merge branch 'parser' into feature/db-selection
New approach in semanticLayer

Started implementing tree structure.
Merge remote-tracking branch 'origin/feature/db-selection' into feature/semanticLayer

Conflicts:
	src/com/etk/data/DataSource.java
midwork
New implementation of sparql queries

It's late, no idea what to write...
Merge remote-tracking branch 'origin' into feature/semanticLayer
pre merge
Merge branch 'feature/semanticLayer' into feature/db-selection
Fix for RemoteSourceRDF, now it can be compiled
disi
Merge branch 'feature/semanticLayer' of https://github.com/ilucin/relsem-bridge-backend into feature/db-selection
demoable query executor