Tidies up AppDelegate
Fixes device information controller using wrong index to calculate height
Adds method descriptions
Removes redundant code and works on better disk space calculations

Fixes #5
Removes stray semicolons
Adds method description for log controller
Adds formatting tidy-up
Adds method description to user defaults deletion method
Implements first use of MDCLog
Adds description of device information item method
Corrects Doxygen markup for device information controller
Adds method descriptions to MDCLog
Minor formatting fixes
Removes boilerplate code for UITableViewCells
Silences type warning for NSInteger to int
Removes more boilerplate code
Merge branch 'feature/tidying' into develop

* feature/tidying:
  Removes more boilerplate code
  Silences type warning for NSInteger to int
  Removes boilerplate code for UITableViewCells
  Minor formatting fixes
  Adds method descriptions to MDCLog
  Corrects Doxygen markup for device information controller
  Adds description of device information item method
  Implements first use of MDCLog
  Adds method description to user defaults deletion method
  Adds formatting tidy-up
  Adds method description for log controller
  Removes stray semicolons
  Removes redundant code and works on better disk space calculations
  Adds method descriptions
  Fixes device information controller using wrong index to calculate height
  Tidies up AppDelegate