Fix usage of gettext with context
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
implement ipairs for lua types than handle numbers
unbreak input profile: also copy alpha channel in case mask is displayed. fixes #9426
masks path : use distance to select shapes
updated pt_PT translations
[mi] allow to duplicate an iop with params
[mi] respect solo mode when creating new instances

... and hide the base instance when solo mode is active.
Add more Thai translation.
530 translated messages, 2 fuzzy translations, 1098 untranslated messages
lua : fix images reporting their height instead of their ID
lua : improve dumper

correctly detect more cases of duplicates, in particular images
lua/image : add group management

* _group_with(image,[image]) : puts the first image in the same group as the second image. If no second image is provided, the image will be in its own group
* _make_group_leader(image) : makes the image the leader of its group
* _get_group_members_ : returns a table containing all images of the group. The group leader is both at a numeric key and at the "leader" special key (so you probably want to use ipairs to iterate through that table)