Added synctex from okular/generators/poppler
add synctex to CMakeLists
shameless copy from okular/generators/poppler/generator_pdf.{cpp,h}
new if in ::metaData intercepting src: signals, pushing through fillViewportFromSource... (no forward search
without)
changed dpi(?) for perfectly line-to-line accurate search
Merge remote-tracking branch 'upstream/master' into synctex

Conflicts:
	generator_mupdf.cpp
	generator_mupdf.hpp
added synctex init for okular-0.20.0
fixed broken merge
added if before synctex init to the new loadDocument
Merge pull request #1 from abulak/synctex

SyncTex integration