MARMOTTA-85: restructure modules to support modular backends
- first draft of kiwi store backend
- MARMOTTA-87: first draft of native store backend
- first draft of bigdata store backend
MARMOTTA-85: further restructuring of modules to support modular backends
- half-running version of bigdata store backend
- webapp launcher with bigdata configuration
really add the webapp launcher for bigdata
do not wrap transaction sail if it is not needed (safes memory and performance)
some documentation updates
MARMOTTA-328: first running version of Bigdata backend
MARMOTTA-85: move KiWi database configuration to KiWi backend
MARMOTTA-85: remove KiWi specific configuration options from core configuration interface
MARMOTTA-328: create admin interface for bigdata backend
MARMOTTA-85: reestablished ldcache module (for all backends)
Merge branch 'develop' of https://git-wip-us.apache.org/repos/asf/incubator-marmotta into develop