/objectbrowser - Fix handling multichoice fields

* When a multichoice field is emptied, it will now
  get the value "null" instead of removing the attribute.

* When a multichoice field is emptied, remove any
  + ! or - prefixes on the field

Fixes #290
/status/parents - markup fixes
selinux warnings now disappear when fixing problem

Fixes #293
Merge pull request #294 from haukurk/master

Small fix for avoiding SMTPSenderRefused when sending email about a serv...
javascript console log cleanup
/status/overview - update titles
/objectbrowser/edit - update headers
/status/ - cleanup old views

Removed boxview and paneview
code cleanup in comments
rest - update livestatus connection
hostgroups.html - fix indent
state_history updates

Refactor state history stuff.

state history inside hostgroup detail is now javascript loaded
for better response times
status/hostgroup/detail - lazy loading

Lazy loading of hosts and services
Revert "Enable ellipse for status tables"

This reverts commit cb2a16d2335a1852bc67032a9d506f80bf8ce282.
notifications fix for "show_once"

Notifications that have the tag "show_once" are now actually...
shown once
migrate rest/index to new base.html
remove deprecated contact_us view
moved test_livestatus to new base_objectbrowser
deprecated base_misc.html
javascript optimizations
style optimizations after base_objectbrowser.html update