Save results mode

There are two abilities of saving the curves.

1. Saving the file in *.bin file

2. Saving to a *.set file

Formats explanation:

1. *.bin file is used to save limit a single curve. This format is supported by old version of our software.

2. *.set  file is used to store a set of curves (many curves) in one file. This format is not supported by older versions of software