Imio.helpers

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- Added `setup_ram_cache` method.
[sgeulette]
- Added `set_site_from_package_config` method
[sgeulette]

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- Improved `get_relations` to get optionally referenced objects.
[sgeulette]

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- Added `content.get_vocab_value` based on `content.get_vocab` but returns
the values (`attr_name='token'` by default, may also be `value` or `title`).
[gbastien]
- Added `EnhancedTerm` based on `SimpleTerm` providing `attrs` dict on term
[sgeulette]
- Added `cache.cleanForeverCache` that will clear cache of functions using the
`forever.memoize` decorator.
[gbastien]

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- Refactored `get_object`
[sgeulette]

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- Added `cache.obj_modified` function that returns max value between
obj.modified(), obj._p_mtime and __anotations__._p_mtime
[sgeulette]
- Added `cache.extract_wrapped` function that returns original decorated function.
Useful to compare cached and non cached results in tests.
[sgeulette]
- Updated git fetch url
[sgeulette]

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- Added monkey patch to handle SSL mailer on port 465.
[sgeulette]
- Added `content.base_getattr` method that will `getattr` without acquisition.
[gbastien]