[client] Add a skeleton of HistoryView
[test][client] Use expect().to.be.a() instead of using instanceof
[RestResourceHost] Add a query option to specify itemId on getting items
[LatestView] Add links to show graph page
[HistoryView] Load requested item & history
[HistoryView] Check URL of requests
[test][OverviewItems] Unify respond() & respondItems() to simplify
[test][LatestView] Unify respond*() functions to simplify the code
[test][HistoryView][LatestView][OverviewItems] Simplify beforeEach()
[test][HistoryView][LatestView][OverviewItems] Fix syntax errors in previous commits
[HistoryView] Check the length of items
[client] Import some files in Flot 0.8.3 (http://www.flotcharts.org)

Only the following files are imported at this time:

* jquery.flot.js
* jquery.flot.time.js
[HistoryView] Draw a simple graph for an item's history
[HistoryView] Fix wrong caluculation for UNIX time in msec
[HistoryView] Remove a needless variable in the previous commit
[HistoryView] Fix indent
[HistoryView] Fix a function name

onItemLoad() ->
onLoadItem()
[test][client] Add missing include files

* jquery.flot.js
* jquery.flot.time.js
[HistoryView] Add graph area dynamically
[LatestView] Dont's show links to graph pages for string & unknown type items