- change font size from 10 to 11pt
- rework title page (main title not less prominent than chapter headings;
  extended subtitle; full affiliation)
- rework introduction (separate paragraph on IsGisaxs)
- reword a few paragraphs

First version of chapter "Fitting" of the manual, correction of typo in IMinimizer.h and modification of PrintResults in FitSuite.cpp

Manual - Example - Implementation of Gennady's comments (new figure for sample, \alpha_0 \phi_0 replaced by \alpha_i,  \phi_i, remove identical remarks, url of NumPy moved to references)

Manual - updated version of Python Example (sign of input beam angle and convention on implementation of refractive index)