Fix for ToolParameterValueWrapper.get_display_text() due to inconsistent behavior between Python2.7 and lower for empty strings.

expected quoted empty string:

$ python2.7
Python 2.7.5 (default, Aug  1 2013, 00:59:24)
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pipes
>>> print pipes.quote('')
''
>>> repr( pipes.quote('') )
'"\'\'"'
>>>



python < 2.7:

$ python2.6
Python 2.6.1 (r261:67515, Aug  2 2010, 20:10:18)
[GCC 4.2.1 (Apple Inc. build 5646)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pipes
>>> print pipes.quote('')

>>> repr( pipes.quote('') )
"''"
>>>
Use Galaxy root to dynamically load CSS files.
Pack scripts.
Send changeset_revision to method that renders the Repository Actions pop-up menu in the tool shed to ensure the desired repository revision is used when choosing actions.
Correctly handle the case where a repository installs correctly, but it depends on a repository with a tool dependency that is in an error state.
Enhance the installed repositories container on the Manage repository page in Galaxy to properly display mising repositroy and tool dependencies for an installed repository.
Add pipe (|) to the set of VALID_CHARS in shed_util_common.py. Fixes an issue with e.g. ReST display.  TODO: Revisit this method and its usage throughout the toolshed and the toolshed interaction with Galaxy: e.g. is it still needed everywhere it is being used, and is it still doing what it is supposed to be doing?
Handle the case where the repository being installed has a newer downloadable changeset revision available. (Generally restricted to the new tool_dependency_definition repository type)
Datatypes: temporarily remove graph datatype sniffers (f3a985005267) until they can be made more discriminating
Logic on DiskObjectStore's empty() method was reversed (previously returned True when non-empty).
merge stable.
Remove S3 connection method from objectstore, missed when S3 was moved to its own module.
Reorganize object store options in sample config file.
Implement a local_extra_dirs decorator in the object store that object store plugins (e.g. cloud object stores) can use to cause things like the job_working_directory to be stored on local disk.
Experimental/alpha/in-development/incomplete object store plugin for iRODS.  This plugin will probably set your iRODS instance on fire: do not use except in development/testing.
UI and Trackster: (a) restore trackster tool save functionality; (b) add toggle functionality to visibility mixin; (c) extend tool class to create trackster tool rather than create new class.
Log, then raise the IOError exception that occur in DiskObjectStore.update_from_file() as per discussion 08/05/2013-08/12/2013.
Irods get_data was using wrong varname for reading(count)
Fix maf_utilities formatting, removing windows terminators.
Strip COPIED_FROM method in datatypes/sequence.py from maf_utilities; avoid circular import.