Pyptv

Thanks to devowit and zmbq we can now run also on newer numpy.
I fixed two bugs in the actions that didn't use `(self,info)`

- image names in sequences can be with extension, e.g. `cam1.test2_.tif` and then `` will be replaced by the frame number in sequences
- new button `Save to Paraview` writes a new set of output files, copies of `ptv_is.` files into .txt files that are compatible with Paraview set of points.
- rgb2gray option is included and merged from previous pull requests
- enthought deployment manager `edm` is used for easier installation of `enable`, the rest is installed through `pip`
-

[](https://sourceforge.net/projects/openptv/files/0.1.8/PyPTV%20v0.1.8.zip/download)

- `conda install swig`
- bleeding edge `enable`
- newer `chaco`
- `optv` 0.2.6a

conda recipe

this is a bug fix release
1. manOriParams
2. overwriting addpar in raw_orient (external_calibration)