Allow navigation of query history using arrow keys. (RM #2590)

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Issue migrated from Redmine: https://redmine.postgresql.org/issues/2590
Originally created by Dave Page at 2017-07-20 19:47:02 UTC.

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Comment migrated from Redmine: https://redmine.postgresql.org/issues/2590#note-1
Originally created by Matthew Kleiman at 2017-07-20 19:47:45 UTC.

Applied in changeset commit:21bfcd83f420000ba06f146ed1d2010fd66db0ed.

Redmine ticket header update:

Name	Old Value	New Value
Status changed	New	In Testing
Done Ratio changed	0	90

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Comment migrated from Redmine: https://redmine.postgresql.org/issues/2590#note-2
Originally created by Fahar Abbas at 2017-08-17 06:56:22 UTC.

This is resolved in latest commit ID:
deb5475

Tested Platform:
MAC 10.9(Python 3.5)
Ubuntu 16.04(Python 3.5)

Redmine ticket header update:

Name	Old Value	New Value
Status changed	In Testing	Resolved

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Comment migrated from Redmine: https://redmine.postgresql.org/issues/2590#note-3
Originally created by Fahar Abbas at 2018-01-09 05:52:14 UTC.

Redmine ticket header update:

Name	Old Value	New Value
Done Ratio changed	90	100

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Issue closed on Redmine.