Rename internal 'thumbnail' constant and implementation file name
Add new class MetaData and change accessor methods.
Rename methods getInput/OutputStream() in openInput/OutputStream()
Chante getId() method in interface Record
Change DataBase record ID fields and methods
Rename method DataStore.getFile() in getStore()
Add getBanner() method to DataStore
Fix debug output string in method getMetadata()
Change input parameter Id type from String to Integer
Change DataStore directory structure from flat to hierarchical
Update UI component
Change field Id type in Query classes
Update UI component
Update plugins component
Fix doujinshidb plugin ID inconsistency
Fix DataStore folder name format
Fix doujinshidb plugin ID inconsistency
Fix wrong parameter used in record queries
Fix compareTo() method in RecordImpl
Rewrite logging system used in Core from custom to Apache's commons-logging. Add new logging properties to system Configuration