[FIX] Compass: user-select mixin not imported
[IMP] Completely SASSified i-tables
[IMP] Conference Log placeholder for empty subject
[FIX] Event Logs: email body displayed correctly

- Email body rendering now handles new lines according to mime-type
- closes 1511
[FIX] SASS i-buttons :active glitch
Changed jabber log URL
Error when JSON-encoding dict with invalid UTF8

It tried to decode() a dict - that just can't work!
Fix "static URL" in collaboration admin

date ranges were broken
Sort by time in collaboration admin
Properly update VS indexes when rescheduling event
RegForm allows accommodation departure same day
"Alerts" -> "Alarms"

In order to avoid confusion.
Merge remote-tracking branch 'upstream/v1.2'
Revert "[IMP] Consolidate big gaps in category statistics"

This reverts commit d51b103bc7ac90d9eb3d3944aaa307137f1fbbb0.
[IMP] Statistics page revamped
* First version
[FIX] Fixed a plot-related bug
* The values are now sorted and the plot is shown correctly
[FIX] # of users loaded into the BD
* Now the number of users is loaded into the DB by the statistics updater task
[FIX] Fixed axis rendering
* Now the y and x axis are rendered correctly
[FIX] Fixed x axis
* Fixed a minor error with x axis
* Added the "year" label
[IMP] Added jqplot plugins
* Plugins added: data point highlighting, mouse cursor tracking and plot zooming