Remove redundant group property from CellList.

fixes #34
Merge pull request #79 from dankurka/fix_celllist

Remove redundant group property from CellList.
Added iOS theming for SearchBox.

SearchBox theming for iOS.
Addressed comments.
Updated Css formatting.
Merge pull request #81 from kfa/ios_theming_searchbox

Added iOS theming for SearchBox.
Fix android theme
All images are now black with varying alpha.
Merge pull request #83 from kfa/fix_images

All images are now black with varying alpha.
Add ImageConverter.
Fixed formatting
Merge pull request #84 from kfa/image_converter

Add ImageConverter.
Merge pull request #85 from dankurka/android_theme

Fix android theme