GLM2 bug fix and code cleanup: Local glm object model kept in GLM2 while computing glm iterations was not being updated with the most recent version from DKV leading to losing some validation.

Also, returned separate progress views and removed some obsolete/duplicate methods.
Tiny update in RPC. When checking for remote exception, call getDException instead of (fork join method) getException.
Merge branch 'master' of github.com:0xdata/h2o