Improvements to Index

Changes to Index app:
- date/time format
- overall visual changes
- removed Search box for the moment, as it only works with PlainPost messages

Solved https://github.com/privly/privly-applications/issues/31
Renamed Index to History + changed Chrome context menu 
I think this is the best place to exclude redirects for the Login application. If the redirect location contains the string `Login/new` then you should not redirect to it.