text touches
db reset added

db rereads (or recreates blank) .todo config and reconfigures itself on
fly if cfg is changed
No data is transfered.

code: getProject() -> (TodoDb)getDB() and deals with db cache itself

code: config regfexp moved on match names
sql: id's are sequental within project
text touches
Documentation for v1.1.0

usability:
category is no more reused;
default category is 'general'