Replaced loadConfiguration(0) call removed in 9bc1151811f9d059d4a0e591e42165c8e7edb36f

Fixes #394.
Improved documentation for UAVGadgetDecorator constructor.
Merge pull request #396 from kubark42/uavgadgetdecorator-fix

Replaced loadConfiguration(0) call removed in 9bc1151811f9d059d4a0e591e42165c8e7edb36f