MAGETWO-56317: [GitHub] -[2.1.0] underscore in site url breaks admin redirect - The page isn't redirecting properly #5809

MAGETWO-56317: [GitHub] -[2.1.0] underscore in site url breaks admin redirect - The page isn't redirecting properly #5809

Bug
- MAGETWO-59086 [GITHUB] Credit Card capture not associated with the Authorization since upgrade to 2.1.1 #6716
Story
- MAGETWO-58251 PayPal Best Practice to Separate Saved Tokens
- MAGETWO-59073 PayPal Team Comments After Demo: PayPal Vault Shown on Orders in Backend

Bugs
- MAGETWO-56862 [Github] Saving Product does not update URL rewrite in Magento 2.1.0 with single-store mode #5929
- MAGETWO-55935 [Bundle product] Cannot configure bundle product in order editing(admin panel)
- MAGETWO-55849 Customer can be deleted without Merchant permissions verification
- MAGETWO-57118 [github#6201] Form key shared between admin and frontend
- MAGETWO-57989 Unable to create custom image attribute in category
- MAGETWO-55395 Custom address attribute not appearing on Checkout summary
- MAGETWO-59240 There is no WHERE claus for retrieving Media Gallery Data

[NORD] P1, P2 bugfixes

[Mustangs] MAGETWO-59405: Improve Semantic of performance-toolkit Configuration

MAGETWO-56317: [GitHub] -[2.1.0] underscore in site url breaks admin redirect - The page isn't redirecting properly #5809

MAGETWO-56317: [GitHub] -[2.1.0] underscore in site url breaks admin redirect - The page isn't redirecting properly #5809

MAGETWO-56862: [Github] Saving Product does not update URL rewrite in Magento 2.1.0 with single-store mode #5929

[PERFORMANCE] MAGETWO-57697: ModuleDBChangeTest failed in develop branch

Bugs:
* MAGETWO-57796: [GitHub] Inserted image in product description got broken on front end #6138
* MAGETWO-54253: Export filters for products do not work

- refactored collections updater

[Performance] MAGETWO-55299: Fast Save of Product Variations