Add authors to POM (needed for netbeans plugin center)
Version for module is derived from the POM-version
Update release notes
Mode TimeEntryActivity ListCellRenderer into Default, as there are the other ListCellRenderers are defined
Add Apache-License Headers where the "netbeans-default-change-me"-license info was present
Enforce recreation of RedmineOptionsPanel.java (Missing instanciation of Labels)
Clean up - getInstance does not need to be synchronized - synchronization is archived by the "Initialization On Demand Holder Idiom"
Remove unnecessary imports/type info
Remove never thrown exception
Add SCM Information to POM
Merge pull request #14 from matthiasblaesing/prepare_release_1.3

Prepare release 1.3
Release version 1.3
Bump version post release