Gameapi builer bugix release

Gameapi builder has the following fixes included:

 1) linux build now has tons of bugfixes, given that I got new computer with proper linux environment available to test the releases

2) concurrent/parallel url loading in the builder. Now loading the content the first time is very quick, pretty much the same speed as what browsers can do with similarly sized content items

 3) mipmapping enabled also for dynamically loaded textures

4) emscripten version(at meshpage.org) does use indexdb to speed up load times

5) opengl wrapping layer had some bugs related to mapping enums between layers. Now also more than 10 textures are working when I added more enumerations for GL_TEXTUREx

6) progressbars in builder work now pretty consistently / now it shows builder initialization, asset loading, sending to gpu memory as separate sections in progressbars

7) nvidia cards seem to have issues with srgb and linear conversions, so those bugs have been fixed