add ctpsfcube
change documents
Remove ctpsfcube binary from git.
Integrate ctpsfcube tool.

* Checked the code for coding conventions.
* Renamed the angular seperation user parameters to amax and anumbins. "a" stands for angular separation, "d" for delta is less explicit.
* Add ctpsfcube executable unit test
Observation container constructor now always takes a const reference as argument.