Fix misspellings in horizon

Fix misspellings detected by:
* pip install misspellings
* git ls-files | grep -v locale | misspellings -f -

Change-Id: Icf49804b0113d9cba9a807e4ee343d8714571776
Closes-Bug: #1257295
Volume status must be available to extend

Change-Id: I3e149249db0a44be6531dc409176c698819be317
Closes-Bug: #1277570
Display trove instance hostname if available

Trove can now be integrated with designate, the instance will
have a hostname instead of ip. If the integration is not enabled
the ip would be available in the instance info.

Change-Id: I7173f4437e78dd45f8f99d5c9dd80ab86869e943
Closes-Bug: #1262777
Updating tutorial doc for dashboard loading

Changing tutorial to use the newer method for loading dashboards.

The tutorial needs a new revision in general, but that is beyond
the scope of this change.

Closes-bug: #1277325
Change-Id: Ie197b5ad9aafa125235a839fbcc7cd95e352e96a
Add month to date option for Resource Usage

Adds a new option to the date options combo box to show
month to date. Has about the same approximate resolution as "Last week"

Change-Id: Ia5975ba0c57abec5e5deafca1a05741e228fa8d0
Closes-Bug: #1278642
VPNaaS tests refactoring

This patch set removes some redundant code from
VPNaaS tests.

Closes-Bug: #1278823

Change-Id: I09a3a05febe173239434502fac20fe0b01ccab6c
Allows the user to modify an object

Now the user has an option to update an existent object. If
a file is provided, the object's file will be updated. But if
the file is not provided, the object's file will not be
updated.

Change-Id: I67752c7881b0e6b4ab20b13cca94b24d292736d5
Implements: blueprint modify-object
Merge "Add month to date option for Resource Usage"
Merge "Volume status must be available to extend"
Merge "Display trove instance hostname if available"
Merge "Updating tutorial doc for dashboard loading"
Merge "Allows the user to modify an object"
Merge "Fix misspellings in horizon"