track edits on entries
display basic audit trail for entries
quick fix for entry table actions
audit trail basic mockup
wrap audited changes and display them in overview
i18n audit trail
add margin to the bottoms of h1 titles
Merge pull request #209 from DefactoSoftware/jurre/audit_trail

[READY] Audit Trail
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