v7.3.0: Merge pull request #5354 from fstagni/v7r3-fixes23

[v7r3] Partial fixes for Tornado handlers (+ other fixes for v7r3)

v7.2.25

v7r2p25 notes and tags

v7.3.0a24

v7r1p46, v7r2p24m v7r3-pre24

v7.2.24

Conflicts resolved with rel-v7r1

v7.3.0a23

v7r2p23, v7r3-pre23

v7.2.23

v7r2p23 notes and tags

v7.3.0a22

v7r2p22, v7r3-pre22

v7.2.22

v7r2p22 notes and tags

v7.3.0a21

v7r2p21, v7r3-pre21

v7.2.21

v7r2p21 notes and tags