Support for ReshapedArrays or add a LinearView

[vchuravy]

A = drand(64, 64)
A[1:10] .= 1

Will create a View{ReshapedArray{DArray{Array}}} this multiple levels of nesting is quite nasty and annoying. We either need to deal with ReshapedArrays in a principled manner or add a LinearView, that only supports reshaping DArrays into 1-dimensional arrays. This potentially will create striped patterns and eventually will encounter #183.