convert xml unsafe type/attribute names
(cherry picked from commit 0a5abfac25b0099c83c21ef83b8a100a07fe4ae4)
handle OperationNotFoundException for grids

this can happen when the provided CRS is completely foreign
and no possible conversion can occur. this seems to happen with
aerial images containing engineering CRS
(cherry picked from commit b66eef69871e318ed0ae815db1734991bd49559a)
ignore doc/build