supress bulks of warnings regarding unsused files in beat.web, beat.core, and beat.backend.python

This merge requests suppress some of the warnings regarding the unused files in the documentations. This files were excluded using "exclude-patterns=[]" in the conf.py of each separate package, however they were not in the conf.py of the docs and therefore were not ignored.

partially fixes #8 (closed) .

doc/conf.py

@@ -106,7 +106,7 @@ release = version
 
 # List of patterns, relative to source directory, that match files and
 # directories to ignore when looking for source files.
-exclude_patterns = ['links.rst']
+exclude_patterns = ['links.rst', '**/beat.web/doc/**/**/script*.rst', '**/beat.core/beat/core/test/prefix/**', '**/beat.backend.python/beat/backend/python/test/prefix/**', '**/**/AUTHORS.rst']
 
 # The reST default role (used for this markup: `text`) to use for all documents.
 #default_role = None