Adding quint32 to a string does not add to the string and leads to erroneous configuration entries. Converting quint32 to string fixes configuration issues.

Before patching:
phablet@localhost:~/.config$ cat kaccounts-carddavrc

[ carddav contacts import for account]
lastSync=2018-12-14T23:41:20

[Global]
syncedAccounts=28

After patching:
phablet@localhost:~/.config$ cat kaccounts-carddavrc

[Global]
syncedAccounts=30

[account30]
lastSync=2018-12-15T16:46:20