Display full name of programs

The full name of the programs are now displayed in the list of programs in "Show Details" mode

- added minHeight to my_projects_activity_item_background in activity_my_projects_list_item.xml

- added padding to my_projects_activity_list_item_description in activity_my_projects_title_details_view.xml

- added RelativeLayout background in ViewHolder in ProjectAdapter.java to change the size of the listitems

- added testcase for long projectnames in MyProjectsActivityTest.java

Fix Issue #462 

Test: https://jenkins.catrob.at/view/Catroid/job/Catroid-Multi-Job-Custom-Branch/248/