Decrease Doc size by removing some irrelevant content

[dvojtise]

the current documentation jar is quite big with about 36MB It seems to contain files that should not be there (images/images/poster.pdf 6.2MB images/images/Tesis.odp 7.5MB)

May be some content from these files should be reused to contribute to the documentation, or may be we should simply point to an online version of it (HAL for the Thesis ?)