Testing: 1079/0/592

added stream support to downsample, upsample, pyrUp and pyrDown

Added the "Mask operations on matrices" tutorial (with its sample). Plus modified some other core tutorials.

Added Fernandos first tutorial regarding SVMs. Extended the global links (conf.py). Corrected the author names. Minor modification to the dft tutorial. 

Sample files for image scanning, basic Mat, file I/O. Added Victors removed tutorials back in the system. Some typo fixing.Expanded conf.py with new global links.

2) Added a raw Latex page break directive after each TOC tree. (For the PDF tutorial look).
3) Two finished tutorials: 
   a) one describing how the Mat data structure works and its output capabilities (format function) (demonstration YouTube video included).
   b) one describing image scanning operations plus the LUT function (demonstration YouTube video included). 
   c) a basic filtering approach (plus multi row image scanning demonstration) in the work.

Added image-manipulations android sample, other samples are updated; added Mat.size method to java API.

* Added manual port for getTextSize;
* Fixed bugs in "native camera" sample;
* Added 15-puzzle sample.

squares.py sample added

fixed "import cv" in the new python samples. corrected Python bindings to match the documentation and vice versa (NOTE: in cv2.stereoCalibrate the parameter ordering has been changed)