Added check for image loaded (savedBitmapFile) and test
Teaked tests that failed on jenkins
Merge pull request #158 from Catrobat/11.27_FillAfterLoadImage

Added check for image loaded (savedBitmapFile) and test
Implementation: @dlandenhauf [DL]
Acceptance: @galstc05 [SG]
Merge branch 'master' into 11.23_ConsistentDialogTheme