OJS 3.4 compatibility

[KayWP]

At openjournals.nl we tried installing the current version of the plugin into an installation that uses OJS 3.4 to see if it works for that version of the software.

Our findings were:

• The plugin installs and activates without any problems
• However, no 'site statistics' item is available under navigation
• Going to either platform-url/index/statistics or platform-url/journalabbreviation/index/statistics does not result in a statistics page.

The installation we tried it on was our test installation, which uses sandbox mode.