Revert "Revert "Added Gmail icon, Calculator. Google+ and setting""

This reverts commit 7b4880a4d05eb1b8707e994c654fa73feeab1dcd.
Revert "Revert "Revert "Added Gmail icon, Calculator. Google+ and setting"""

This reverts commit 50b2812047d73fd599d24cd3395b4ce72d1324ed.