clean assert
Revert "clean assert"

This reverts commit 11fdfb5dccf91aca3d65a3c63cd0bebd5726acf7.
rewrote assert verify is now fatal_error
renamed verify to fatal_error
doc
Merge branch 'master' into cleanAssert

Conflicts:
	src/DGtal/io/Display2DFactory.ih
char* to std::string for concatenation support
left over verify
new files from master
fixes
Merge pull request #708 from elcerdo/cleanAssert

clean assert