[SYSDM] Fix version string cutoff CORE-17429

[SYSDM] Fix version string cutoff CORE-17429

The version string cutoff started to happen when we switched from SVN
with its short revision number to git with the longer hashes.
0.4.7-dev-502-gc2c66af was the first git-only rev (2017-Oct-03)

This brings the dialogs layout closer to XP.
Also fixes some other truncations for specific languages.
And unifies the touched text controls sizes for all languages.

The credits have been moved to readme.txt where they are more present and
we can avoid having to groom all languages files each time we want to add
a new dev (and sysdm.cpl to grow each time). Less maintenance.

0.4.15-dev-1629-g9aa73da gcc 8.4.0 dbg RosBE2.2.1 I18N=all binary size
sysdm.cpl before: 925.696bytes  after: 705.024bytes
readme.txt still fits into a single NTFS cluster afterwards with 3702bytes