Lock in more specific composer deps, in an attempt to quell the memory issue:

https://github.com/composer/composer/issues/1898#issuecomment-43555661
Do not save GROUP_KEY when setting config, fixes T306
Rename logo@2X.png -> logo@2x.png and fix errors building css
Partially revert "Move default config params to individual config files in their plugins"

This reverts commit 0cdcea59976370018113a754ae82ee78df480042.
Restructure messages and tools SCSS files
Add data provider list and config

- Pass dummy models to the view
- Generate backbone form based on data provider 'form' attribute
* moved `.actions-bar` into `partials`
* message config `action-bar` styling

Styling data provider config
* data provider card/message sources
* Data Provider Tab Nav
* individual providers config template
* Data Provider Selected States
* hardcodes DataProviderConfigSms
Hide new ui hidden behind feature config
Add data provider listing and config

Summary:
- Restructure messages and tools SCSS files
- Add data provider list and config
- Using dummy models to power views
- Generate backbone form based on data provider 'form' attribute
- Styling data provider config
  * data provider card/message sources
  * Data Provider Tab Nav
  * individual providers config template
  * Data Provider Selected States
  * hardcodes DataProviderConfigSms
- Hide new ui hidden behind feature config

Test Plan: None yet

Differential Revision: https://phabricator.ushahidi.com/D127
Data provider item clean up

- Remove 'pointer' cursor from entire data provider items
- Avoid duplication of data provider items
- Use <a> for provider buttons
Move repeated bits of message config views in DataProviderLayout

Hiding the tab nav for now.
Change data provider routes to messages/settings cos data-provider suck to type
Trying to load some real data provider data
Update init.php for email data provider
Fix 'default_providers' config in testing environment

Missing s
Allow access to data-provider config via API
Get data provider status from config API and show in listing

Load data-provider config group, copy status to 'enabled' attribute on
data-provider models. Use this to update the views.
Clean up DataProviderModel.js and set default 'enabled' to false
Save provider status to config api when enabled/disabled in listing
Fix link to data provider config
Load data-provider config values, wire up config form to save them