-changed the appearance and usability of DE_LocalStorage and strDatenDatasetLoader
-updated headlines for DE_* pages to be "LocalStorage", "WebSQL", ...
-added pages for SQLite (code copied from WebSQL for now)
-extracted controllers into sub-folders (demo, platformTests, performanceTests)
-Implemented Basic functionality to DE_PG_SQLite
 -Adapted the Overlays of DE_PG_SQLite_
-Implemented Basic functionality to DE_PG_SQLite
 -Adapted the Overlays of DE_PG_SQLite_