Move GA key to env variable, and script to partial. Fixes #217
add edit page for projects
add billable to a project
Merge pull request #221 from johnthepink/move-google-analytics-to-env-variable

Move Google Analytics
Merge pull request #212 from DefactoSoftware/marcel/billable-project

[READY] Marcel/billable project
Add Client model
Add client to project form
Add failing client feature specs
Add logo to client model
Add client views
Display hours per day on user entries page
Fix timeseries for new EntryStats
Merge timeseries and entrystats
Put charts in partials
Add category pie chart to users
Fix locales
Fix link to users in overview
Minor fixes
Use Timecop to ensure difference in time for scope specs
more i18n fixes