Allow 'Manage Host' to show membership action

Now on the 'Manage Host' page shows also the membership
option to be opened on a new tab.

Change-Id: I73c431232650c00cb5dcbac5a96382a4247690cb
Closes-Bug: #1288280
Changed the label from Edit Rules to Manage Rules

In the Access & Security' category under Project tab,
for each security group, there is an option to edit
the rules. Clicking this button, lists all the rules
for a given security group and from there we can
add/delete rules. Since there is no support for security
group rule editing provided by Nova/Neutron, in this fix
the label of the 'Edit Rules' button was changed to
'Manage Rules' instead.

Closes-Bug: 1210513

Change-Id: I644c95b2f0147f5f59b543fd1eb9748ee4eb7e19
I18N: Fix untranslatable strings in LBaaS workflow

Closes-Bug: #1292995
Change-Id: Ic5a9d4e42c1320658ca47250979639f66e0da5e0
Merge "I18N: Fix untranslatable strings in LBaaS workflow"
Merge "Changed the label from Edit Rules to Manage Rules"
Merge "Allow 'Manage Host' to show membership action"