Adding Billing Administrator and Purchaser roles

These roles are required for the Store release
Merge pull request #24 from Rise-Vision/feature/store-roles

Adding Billing Administrator and Purchaser roles
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move server calls to StoreDataController

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link to open overlay dialogue

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[Fixed] Fix issue with floating unused modal during store product selection

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Make shared gadgets omit Rise ones, and fix critical bug just introduced

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#254 [chore] - Rearrange Content select menu items

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Improve RVA modal style
updated common jar
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