Replacing Gnucash with GnuCash
Fixed small typos
Android Studio gets error if same string is defined more than once

Introduced in commit 3616eff03f81de2b1ff271de810388f446bcde0e
Merge pull request #155 from aerkefiende/greektranslation

Remove duplicate string from Greek translation
Merge pull request #153 from aerkefiende/germantranslation

Updated German translation