added basic version of title details activity:
- displays all information (except list of loanables) like in the mockup
- receives the title object through putExtra()
- loads more information (authors, editors, loanables) from the title in the background and publishes them to the view after they are loaded (during the load a loadicon in the actionbar pops up to indicate that data is loaded)

bugfix in the TitleDao.getByIsbn()
added functionality to the title details activity:
- loanables will now be filtered (if user has a loan for this title, only his loanable will be displayed (with checkIn button), available books will be shown to all users (even not logged in), reserved loanables will be shown only to users which have a available reservation for it)
- checkOut button
added functionality to the title details activity:
- refactored code
- added checkIn functionality
- reserve button will only be displayed if logged in and has no current loan for title
after checkIn or checkOut the activity will be reloaded to refresh the loanable list
added functionality to the reserve button
bugfix in ISBN scanner
Merge pull request #5 from creydr/title-details_development

title-details_development
Merge pull request #29 from creydr/master

Title details activity
Merging the changes with the main repository