Remove selected dapps functionalties, pending rewrite

[karmacoma]

For Lisk 1.0.0, we will remove the following selected dapp related functionalities, pending a full rewrite.

Functionalities to be removed:

• Download
• Installation
• Uninstallation
• Process management (and sandboxing)
• Interprocess communication
• Peer to peer communication

Functionalities to be kept:

• Application registration
  (but only using lisk-js, therefore PUT /dapps will be removed)
• Application deposits
  (but only using lisk-js, therefore PUT /dapps/transaction will be removed)
• Application withdrawals
  (but only using lisk-js, therefore PUT /dapps/withdrawal will be removed)
• Getting an individual application registration
• Listing of registered applications
• Listing of application categories

Related issues:

• Refactor API endpoints to follow REST standards #225
• Remove all insecure POST API endpoints #457
• Remove dapp API endpoints lisk-elements#106
• Remove support for lisk-node lisk-build#160

[karmacoma]

@diego-G Please note, as part of closing this issue, https://github.com/LiskHQ/lisk-sandbox and https://github.com/LiskHQ/lisk-node will be discontinued and moved to @LiskArchive.

[diego-G]

• Remove Download
• Remove Installation
• Remove Uninstallation
• Process management (and sandboxing)
• Interprocess communication
• P2P communication
• Remove dapps registration --> PUT /dapps
• Remove dapps deposits PUT /dapps/transaction
• Remove dapps withdrawals PUT /dapps/withdrawal
• Refactoring GET /dapps
• Refactoring GET /dapps/:id
• Refactoring GET /dapps/categories
• Database and migrations review
• Config files
• Final overview

[karmacoma]

Reopening due to premature API breakage and poor test coverage. Pull request incoming.