Bug 18302: Release team 17.05

Bug 18302: Release team 17.05

Changes to about.tt in sections release team and development team.

Notes:
[1] We do not have a QA manager in 17.05 any more.
[2] Martin Renvoize has been added to the QA team of 16.11 after the
election; this was not adjusted in about, but has been added in the
Development team section now.

Test plan:
Compare about:Koha team with roles for 17.05 page on the wiki.

Signed-off-by: Josef Moravec <josef.moravec@gmail.com>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>