cleanup

* switched back tojson to json.dumps
* no need for global in load_index()
Merge branch 'kwd-search-clean-no-autocompl' of ssh://github.com/vidma/DAS into kwd-search-clean-no-autocompl
refactored require_string check for input and kwquery
refactored require_string check for input and kwquery
issue#77
Merge branch 'kwd-search-clean-no-autocompl' of ssh://github.com/vidma/DAS into kwd-search-clean-no-autocompl
dbsmgr instance is now required param. issue #77
Merge branch 'kwd-search-clean-no-autocompl' of github.com:vidma/DAS into vidma-kwd-search-clean-no-autocompl
cleanup kwdsearch templates

P.S. for simplicity rt (lookup) is assured to be of spaceless string in code generating it
cleanup KWS tests slightly
get rid of the non needed DASCore() creation
option to keep datasets col on dbsdeamon start: speeds up the loading
option to keep datasets col on dbsdeamon start: speeds up the loading
Merge branch 'kwd-search-clean-no-autocompl' of ssh://github.com/vidma/DAS into kwd-search-clean-no-autocompl
Merge branch 'kwd-search-clean-no-autocompl' of github.com:vidma/DAS into vidma-kwd-search-clean-no-autocompl
Fixed records DAS query