updated git urls to https
also update ant build for library projects in external/
fix the problems and warnings in ./update-ant-build.sh
fix launcher icon
Added languages
updating spanish translation of arrays.xml (Transifex)
Updating and correcting the spanish translation of strings.xml (res/value-es/).
Updating the spanish translation of strings.xml (res/values-es-rES/)
setting XML namespace in strings.xml
updating build paths and external project versions
changed external urls to https ones