Fix WireframeHelper for BufferGeometries without offsets

by just creating a dummy offset
fix coding style
renamed offsets into drawCalls
typo fix
adds loadingmanager for #4827
Bower "main" should not point to minified source
Merge pull request #5474 from mattdesl/patch-1

Bower "main" should not point to minified source
Merge pull request #5463 from vincent/dev.missingloadmanagers

Adds missing LoadingManager in some loaders
BabylonLoader: Updated to latest BufferGeometry API. Fixes #5475.
Editor: Added shadow to info text.
Editor: Moved setIds to the objects themselves.
BabylonLoader: Robustness.
Editor: Support for babylonmeshdata files.
ObjectLoader: Warnings instead of Errors.
Editor: Set default emissive and specular color.
Updated builds.
ShadowMapPlugin: Fixed shadowCamera. Fixes #5448.
Code clean up.
Updated builds.
Merge pull request #5408 from valette/patch-3

Fix WireframeHelper for BufferGeometries without offsets