Merge pull request #5 from KKBOX/dev_daniel

Fix write log file used wrong folder path
add an onReceivedHttpHeader callback in KKImageListener;
update tests
Merge branch 'master' of github.com:KKBOX/android_kktoolkit
remove createMirrorBitmap function
fix KKImageRequest saving cache image which cannot be decoded
make ImageRequest be able to save image to local SD card
dont remove local image file if KKImageRequest cannot decode it
fix KKSearchViewCompat on device level 7
make ImageManager several function static
add ResizableButton and ResizableView
add KKExpendableListView and KKExpandableListViewFragment
Return KKUnageRequest when loadBitmap
Merge pull request #6 from KKBOX/dev_justin

Return KKUnageRequest when loadBitmap
add a KKImageOnReceiveHttpHeaderListener
Merge branch 'master' of github.com:KKBOX/android_kktoolkit
fix KKAPIRequest multipart request
Modify setMeasuredDimension change to super.onMeasure for ResizableView and ResizableButton
Merge pull request #7 from KKBOX/dev_jason

Modify setMeasuredDimension change to super.onMeasure for ResizableView and ResizableButton
fix imageManager example
add a invalidateCurrentTabFragment function in KKTabFragment