Fixed mongo connections, tidy up models

New number value on Responses model
Merge pull request #16 from 1QuickQuestion/data-model-tidyup

Fixed mongo connections, tidy up models
Added the package waterline in order to abstract the database.
Added average function on ResponsesController.
Model fixes for Mongo IDs
Merge pull request #17 from 1QuickQuestion/data-model-fix

Model fixes for Mongo IDs
Merge pull request #18 from 1QuickQuestion/AverageCalc

Added the package waterline in order to abstract the database.
Fix surveys field update when created (using afterCreate now + update on the colection)
Homepage revamp
Merge pull request #19 from 1QuickQuestion/fixSurveysCreationUpdate

Fix surveys field update when created (using afterCreate now + update on...
Home and admin pages - bit rough
Merge pull request #20 from 1QuickQuestion/homepage-shwing

Homepage shwing
Homepage images
Merge pull request #21 from 1QuickQuestion/homepage-revamp-2

Homepage images
merge
merging