[mylyn-integrators] Attribute controls size

[Ilya Ivanov <ilya.ivanov@xxxxxxxxxxxxxx>]

Hello!

In the task editor the attributes section doesn't use all the editor 
width. The attribute controls have constant size. Can the attribute 
controls be stretched to the whole width (like the comments for 
example)? If yes, how can I do it?

Thank you,
Ilya