unify alerting system

actually, just removed the last remaning modals since the change would be just as big and this was also planned
closes #39
Merge branch 'hotfixes' into development

Conflicts:
	dist/kopf.js
	src/kopf/controllers/cluster_health.js
automatically display notification when node joins/leaves the cluster

closes #19
persist history request for rest client

closes #41
bugfix: index creation still used old alert system

old alert system was completely removed
make alert with gist link linger around longer(1min)

closes #43
removing console.log
Merge branch 'hotfixes' into development
display request body on request history

also, now only different requests are added to history

closes #44
sort indices on alias creation select

closes #49
sort indices, types, fields and analyzers on analysis page

closes #50
update to jsontree 0.1.3

closes #51
improve response handling in failed requests on rest client

closes #46
make color for icons uniform on cluster overview

closes #47
add jshint to gruntfile

closes #52
added qunit integration to grunt

still no tests
release of 0.90.0