centralized many dependencies in core libs

Core/ivy.xml

Core/nbproject/project.properties

Core/nbproject/project.xml

CoreLibs/ivy.xml

CoreLibs/nbproject/project.properties

CoreLibs/nbproject/project.xml

Experimental/ivy.xml

Experimental/nbproject/project.properties

Experimental/nbproject/project.xml

ImageGallery/nbproject/project.properties

ImageGallery/nbproject/project.xml

KeywordSearch/ivy.xml

KeywordSearch/nbproject/project.properties

KeywordSearch/nbproject/project.xml

Tika/nbproject/project.properties

Tika/nbproject/project.xml

thunderbirdparser/ivy.xml

thunderbirdparser/nbproject/project.properties

thunderbirdparser/nbproject/project.xml