Gets the host name by using given account name with server postfix
Removes unnecessary username and password params
Allows passing code and path as globals params for all requests
Merge branch 'master' into develop
Added lxml package to dependencies
Added "requests" to the required dependencies
Added DIR helper to netstorage.baseservice.Binding

`Binding.dir()` returns a list of dicts with these keys:
'type', 'name', 'mtime', 'path' and if applicable, these keys:
'size' (only for file type entries), 'target' (only for 'symlink' type entries)

'path' is computed from the `path` parameter passed to `dir` and the 'name' key.
If the `path` parameter is left empty, the 'path' key is the same as the 'name' key.
The 'size' and 'mtime' keys are converted to proper Python values (int and datetime,
respectively). If an error occurs during value conversion, they are left as strings.
Merge pull request #3 from mobilerider/new-method-dir

New DIR helper method and dependency fixes
Simple exception hierarchy and raise the corresponding exceptions for 403 and 404 responses
Convert to `int` the result of the DU action
Merge pull request #5 from mobilerider/minor-type-conversion

Convert to `int` the result of the DU action
Merge pull request #4 from mobilerider/minor-exception-improvements

Simple exception hierarchy and raise the corresponding exceptions for 403 and 404 responses
Merge pull request #6 from mobilerider/develop

Develop
Raise 403 and 404 exceptions in DIR operations