Hello, during translation I've met the following issues:

> "Add remove and edit rows of data (you can optionally use CNTL-N to add new " 
"rows and the Delete key to remove the selected row)"

It's more common to use Ctrl instead of CNTL

> Enter a filename or a relative or full path for this source of '%s' (Glade " 
"will only ever load them inthe runtime from your project directory)."

space is missing. I failed to understand who are "them"

> msgid "Setting %s to set maximum width in charachters"

It's probably better to use another wording. I'd better avoid Setting %s pattern at all. 

> Undo: create image1

General scheme about "Undo: something" is very ugly translated in Russian for example. I'd suggest to avoid it. Moreover it's translated by parts.

> msgid "Choose parentless %s(s) in this project"

Is it instead of ngettext?