Add heading property to BasePage class

Every page should have heading that corresponds to menu item that was
picked.

Partially implements blueprint: selenium-integration-testing

Change-Id: I8257cc50911904169c27e0687d40bcfe49e332c4
Cleaned up dict.update(single elem dict) code

There's several places in the code where this type of thing exists:
    form_data.update({'vpnservice_id': vpnservice.id})
better would be this:
    form_data['vpnservice_id'] = vpnservice.id
This type of thing bothers me, so I'm going to clean it up.

Also fixed the two cases of:
    if <some_string>.find(<some_other_string>) != -1:
which should clearly use the "in" operator instead.

Change-Id: Ic72a5b0a17c211f3949edc69732c1101c24590ec
Closes-Bug: 1339849
Move _datepicker.scss to a correct place

The place that is referenced by _horizon.scss.
Closes-Bug: #1341655

Change-Id: I2dd796dbfd8ca6083c4d0025905d404e66b36cc5
Display flavor details in instance listing in a popover

This patch moves the flavor details in the instance listing into
a popover to reduce the amount of displayed details in the listing.

Change-Id: Ibd8cd228bae41e0f2870a8a14b6ce21338d61a8f
Closes-Bug: #1314177
Fix typo in select methods definition

Constructor of Support.Select object expects webelement, just one
argument is necessary, therefore the asterisk is redundant.

It seems like this method was refactored and was originaly used with
locator.

Partially implements blueprint: selenium-integration-testing

Change-Id: Id0b1432a8a254283d8d03ec03da7cb4c3e30347b
Merge "Fix typo in select methods definition"
Merge "Add heading property to BasePage class"
Merge "Cleaned up dict.update(single elem dict) code"
Merge "Move _datepicker.scss to a correct place"
Merge "Display flavor details in instance listing in a popover"