Typos in comments and message, localization context needed

[Yuri Chornoivan]

Inkscape code contains some typos, namely:

transform -> transform
the the -> the

selection-chemistry.cpp contains localization context for "Raise" but does not contain it for "Lower". This leads to the awkward translations at least for Ukrainian.

Thanks for fixing the issues.

[jazzynico (jazzynico)]

Fixed in the trunk, revision 12673.

Thanks Yuri!