…hough them at runtime

…hdri image.Now our IBL sources are finally straight not tilded 90 deg anymore. Added artificial shininess to all objects configurable in real time from the sandbox.

…pdated the sandbox to reflect the required AEC Aesthetics properties

…on, contrast and shininess are now in the 'post' folder and the hdri dropdown in the 'indirect light' folder. Cleaned up and renamed the available hdris to their descriptive names. The 'Mild' hdri is not set as the default one at library level

…lemented the artificial shininess as a real thing that the user can control

…e (8.3Mb) which is compiled together with the viewer library as base64 that was throwing something off. Because resizing the hdri to the old one's size (1025x512) was not enought (still amounted to 5.8Mb), we also applied a lossy compression algorithm namely DWAB to the image. This reduced the size to 330Kb with no visible tradeoff.