Add new 69 thai language translation.
Merge pull request #237 from tawtao/th-trans

Add new 69 thai language translation.
Rename 'curve' to 'path' in masks

... and make the default names of masks translatable.
Fix masks wording: remove "shape"
Mark default mask group names as translatable
Add a little more space to blending widgets
Fix some more widget spacings
New danish translation by Thomas Pryds
fix colorlabels in lua