Added different page units, python 3, and changed gitignore, portuguese translation

.gitignore

@@ -0,0 +1,48 @@
+INSTALL
+Makefile
+Makefile.in
+aclocal.m4
+autom4te.cache/
+bin/Makefile
+bin/Makefile.in
+bin/ocrfeeder
+bin/ocrfeeder-cli
+compile
+config.log
+config.status
+configure
+help/Makefile
+help/Makefile.in
+help/??/*.page
+help/??/??.mo
+help/??/??.stamp
+help/??/legal.xml
+install-sh
+m4/intltool.m4
+missing
+po/.intltool-merge-cache
+po/Makefile
+po/Makefile.in
+po/Makefile.in.in
+po/POTFILES
+po/*.gmo
+po/stamp-it
+py-compile
+resources/Makefile
+resources/Makefile.in
+resources/icons/Makefile
+resources/icons/Makefile.in
+resources/ocrfeeder.desktop
+src/Makefile
+src/Makefile.in
+src/ocrfeeder/Makefile
+src/ocrfeeder/Makefile.in
+src/ocrfeeder/feeder/Makefile
+src/ocrfeeder/feeder/Makefile.in
+src/ocrfeeder/odf/Makefile
+src/ocrfeeder/odf/Makefile.in
+src/ocrfeeder/studio/Makefile
+src/ocrfeeder/studio/Makefile.in
+src/ocrfeeder/util/Makefile
+src/ocrfeeder/util/Makefile.in
+src/ocrfeeder/util/constants.py