Merge pull request #14 from sweiler/dev

Updated cache-manifest.
Merge branch 'master' of github.com:sweiler/mywallet
Merge branch 'dev'
Merge branch 'dev'
Merge branch 'dev'
Entries are now shown red, if the amount is negative.
Closes #4
Entries are now sorted and categories show the sum of amounts in this category.
Merge branch 'master' of github.com:sweiler/mywallet