Merge pull request #33 from SimplicityApks/master

Add German translation
improved date though needs better alignment
removed shadows and minor fixes
a fab fix and changed default skin to light blue
Coloured icons for gridview
small fixes in array
Merge remote-tracking branch 'upstream/master'
Merge pull request #34 from vishal0071/master

small fixes in array
removed hardcoded strings
string fixes in preferences
adjustable gridview columns
minor fix
cardui preference fix
string fixes in prefernces
Merge branch 'vishal0071-master'
Added option to hide files
removed remaining hardcoded strings...

now completely ready for for translations
option to show hidden files
Added material designed dialogs

list dialogs still need be be themed
minor fixes