GLMixer Code

Implementation of default values for specific properties of Algo,
Basket, Render and Web sources (accessible as context menu in specific
source property browser).

Improved editing and validation of string manager in source property
browser: allow to edit string without setting value of the source,
allowing to type and correct string until its validated. This allows to
edit the Playlist of basket source.

Avoid duplicate functionnality in Gamma Adjustment
Small reset button along axis reset only axis values, Clear button reset
all values.

Avoid duplicate functionnality in Gamma Adjustment: small reset button
along axis reset only axis values.

BugFix: renaming of source when clone or undo was causing recursive
update.

Unified implementation of glMaximumFramebufferWidth and
glMaximumTextureWidth. Slight adjustment of catalog resolution.

Extra behavior for exclusive mode of workspaces; when switching to a
workspace, select all sources in it: this allows fast control of an
entire selection of source (e.g. play-stop with space after switching to
workspace). Changed keyboard shortcut to single digit keys (without CTRL
modifier).

Implementation of generic Image Atlas to keep maps of textures in GPU
RAM. Integration of Atlas into Basket Source for no limitation of image
count and dimensions.

Validating minor changes in dev of Basket Source.

BugFix Size Selection widget (missing values) and runtime check for
validity of values.