queryservice: support lock in share mode construct
queryservice: qualified column names in insert
Convert read-only error to OperationalError
bug fix: SHARE and MODE are not keywords

Looks like share and mode are valid column names even though
LOCK IN SHARE MODE is a special construct. So, we can't treat
SHARE and MODE as keywords. Otherwise, the parser fails for
columns with such names.
Update GettingStarted.markdown
Merge branch 'master' into replication