small fixes in widget code
truncate function: if max_length is 0 show the whole text
changed editor settings array
updated some functions required for option implementation
added settings page
added settings tabs
added option class
removed obsolete lines
added initial option page for categories
renamed option class
added db version check
renamed db class
renamed class event_list
renamed class el_admin
renamed class sc_event_list
added db field categories; changed db version
removed not required div on admin page
Added metabox field and a metabox for category selection (selection not implemented yet)
moved "Publish" and "Cancel" buttons to new "Publish" metabox
small fixes