server, pages, tasks (brython): common_scripts: - scripts common to all pages can now be put in root `_browser` dir - `scripts` list is not set in `dyn_data`'s `template` anymore, but directly in a root `scripts` key (because it's not data which are sent verbatim to the template renderer) - if an `__init__.py` script is found in root `_browser` dir, brython task will add it to template scripts.

import os.path

version_file = os.path.join(os.path.dirname(__file__), "VERSION")
try:
    with open(version_file) as f:
        __version__ = f.read().strip()
except NotImplementedError:
    # pyjamas workaround
    __version__ = "0.7.0D"