- Takes `defaultTables` as optional option and hint columns from that
table without explicitly mentioning table name.
- Update doc/manual.html for sql-hint addon.

Signed-off-by: Nisarg Jhaveri <nisarg.jhaveri@research.iiit.ac.in>

Added hawkee.com

Closes #2790

Issue #2755

Closes #2754

Issue #1544

Bind Cmd-Left to goLineLeft and Cmd-right to goLineRight instead of goLineStart and goLineEnd
Create and bind delVisualLeft and delVisualRight to Cmd-Backspace and Cmd-Delete

Closes #2687

Issue #2678