Also some small refactoring of BufferGeometry handling in WebGLRenderer.

Fixes #2087

This should be the last one. The only ones left should be "webgl_postprocessing" and "webgl_postprocessing_dof" where I got stuck.

This thing is neverending story ...

Preventing setting zero sized EffectComposer (which leads to WebGL and math errors). Also more examples resizing handling.

More examples resizing handling. Also fixed typo in flag name and cleaned whitespace in CombinedCamera.

Fixed FirstPersonControls not handling resizing. Fixed some more examples not handling resizing / zero sized window.

See #2062.

This is tiring :S

Fixed TrackballControls, RollControls and PathControls not handling window resize. Commented out key event swallowing in FlyControl. Started to fix examples not dealing properly with 0 sized window on init.

See #2062

Renaming setRotationFromMatrix / setPositionFromMatrix to the recently changed getRotationFromMatrix / getPositionFromMatrix.

For some reason before it didn't make troubles when sharing the same geometry for objects with materials requiring different attributes. I guess order of initialization may had changed.

Fixes #1876.