adding unit conversion filters, see #9058
applying length unit conversion filters to metadata panel
adding JS handler for length unit formatting
applying length unit formatting on the viewer
fixing minor issue in filter
updating annotation templates
adding time formatter
applying time formatter in viewer
renaming unit conversion filters
fixing timeformatter to allow display modulo in minutes and hours
fixing timeformat to allow to display modulo in minutes and hours
moving floating point to the filter
adding timeformatter to timepoint in the main viewer
updating copyrights
adding support for nanometer, angstrom and picometer
remomoving timeformat from js helpers
removing timeformat from timepoint and adding it to exposure time
Update Django to 1.5.4
Django 1.5.4 requires a default cache
Fix template_loader imports