fixes #247
fixes connection lost in other view controllers
added base web view controller,  refactoring
WebViewController navigation, subviews
changes webviewcontroller, loading view controller from root view controller
changes web view scrolling behaviour
started with new programDetail design

wait for webteam infos
fixes hide toolbars/nav. bar while scrolling down
tap gesture for show/hide controls
Merge pull request #264 from Catrobat/issue-#247

Issue #247
small fix for Program Title Label
fixes #252
changes handle navigation + sub views
bug fixes help web view controller
Merge branch 'master' of github.com:Catrobat/Catty into feature/issue#252

Conflicts:
	src/Catty/CatrobatTableViewController.m
small fixes
fixes scrolling buttons behaviour
Merge pull request #274 from Catrobat/feature/issue#252

HelpViewController issue #252
fixes #253
Merge pull request #275 from Catrobat/issue#253

fixes #253