Merge pull request #416 from karolherbst/travis

test: tidy up UtilLinux_test

we should clean up test anyway. Print something to std::out doesn't make sense.

Instead we should check fixed values against function results. After the 0.8 release we should create a lot of tests to stabilize desurium.
fix compile compatibility with wxWidgets-2.9.4
uicore: fix cef bug with wxGTK-2.9.4

everytime the window was resized to a bigger size some of the background had to be redrawn, which resulted in the disappearing of CEF. Just redraw CEF if something happens to gcWebPanel