Thumbor 5.0 support#24

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aectann wants to merge 4 commits intowilltrking:masterfrom

Commits on May 8, 2015

- Fix bug TypeError: load() takes exactly 3 arguments (2 given) on thumbor 5.0
seanlin0324
committed

Commits on May 18, 2015

Fix for http_loader call
aectann
committed

Commits on May 19, 2015

Use config.get() instead of direct field access to prevent crash when a config parameter is not defined.
aectann
committed

Commits on Jun 16, 2015

Call load_sync when delegating to http_loader.
aectann
committed