added ProgressDialog as classmembers so they can be better cleaned with .dismiss()
refactoring:
- made all asyncTasks (which where before inner classes) to an own class so they can be reused better
setup the callbacks for the onClick listener for the checkIn and checkOut in the activity because they to UI stuff. And it makes the onClick listener reusable in other activities
added functionality on title details page
- if no loanable available, user gets a message
added helper to check the internet connection
Merge branch 'master' into title-details_development

Conflicts:
	AndroidManifest.xml
	res/layout/navigation_drawer_list_view_item.xml
	res/values/strings.xml
#1 - Search function.
Search page with an autocomplete field for topics. Searching redirects the user to a search result page where the result will be shown in a list. Clicking on an item in the list redirects the user to the Title Details page of that title.
Merge pull request #35 from eliasnilsson/master

Functionality for searching for titles.
Merge pull request #34 from yaster77/master

Basic functionality for MyLoansActivity
added login "frame" in settings activity

added activity which should be shown if a internet connection is required but none available
Merge remote-tracking branch 'upstream/master' into title-details_development
made LoanListAdapter compileable
Merge pull request #6 from creydr/title-details_development

title-details_development
Merge pull request #36 from creydr/master

improved isbn scanner and title details activity
refactored searchResultItem (renamed with java convention)
#37 Added split screen support for search
- the search results will now be displayed in split screen mode on large devices (search results as list on the left hand side, title details on the right side)
#37 Improved split screen support for search
- if no title is selected a message will be shown
#37 Improved split screen support for search
- refactored the OnTitleItemSelectedListener (extracted as own interface)
changed navigationpoint "titles" into "search"
changed the search task to use the TaskCallback