[core] Add python-snappy library
[core] make snappy a first class citizen
[core] add parquet-python library
[core] update parquet-python to use file objects
[filebrowser] read parquet in filebrowser

Rudimentary test for verifying output is not binary
[beeswax] Close HiveServer2 and Impala session command

  e.g. Close all HiveServer2 sessions created by Hue
  build/env/bin/hue close_sessions 0 hive

  e.g. Close all HiveServer2 and Impala created by Hue at least one week ago
  build/env/bin/hue close_sessions 7 all
[desktop] A user can share a document to a group he does not belong too
[filebrowser] Snappy decompression error should throw PopupException
HUE-2012 [core] upgrade django auth ldap
HUE-2012 [core] AD multidomain support

ldap_servers takes precidence over normal ldap config.
backward compatible since original ldap config can be provided.
Add server selection logic on front end.
Split tests by configs: test_ldap_deprecated and test_ldap.
The former will test deprecated configs and the later will test new configs.
The Synchronization middleware will choose the first LDAP Server
config when deciding which server to synchronize with.
HUE-2072 [core] Adding support for HTTPS load-balancing

In order to support HTTPS load-balancing that is terminated at the load-balancer level, Hue needs to know that the request came through HTTPS. Django officially supports this by adding SECURE_PROXY_SSL_HEADER to the settings.py file and specifying the HTTP header (X-Forwarded-Protocol) to be set to https.

https://docs.djangoproject.com/en/1.4/ref/settings/#secure-proxy-ssl-header

At the load-balancer level you need to set that HTTP header. Here is the HAProxy example:

```
reqadd X-Forwarded-Protocol:\ https
```
HUE-2072 [core] Updating Proxy SSL support to be optional
HUE-2072 [core] Disable SSL proxy header by default

Add option in desktop/conf.py
Cleanup comments.
HUE-2080 [core] Update tours URLs

Updated to gethue.com and added additional content
HUE-296 [core] Add guppy debugger
HUE-296 [core] Add memory usage debug view

Add variable in settings to make it globally available.
[core] Fix LDAP and useradmin group list tests
HUE-296 [core] Memory profiling config
Revert "[core] make snappy a first class citizen"

This reverts commit 8d15fcf37fe9deedbd0579f1744db7728642db4b.

Conflicts:
	apps/filebrowser/src/filebrowser/views.py
Revert "[core] Add python-snappy library"

This reverts commit c8a63af10a56ca1d3bba96a51d114c976d63dffa.