Externalised logo urls and names for 'credits' page to CreditsMessages resource bundle. Changed plexiti logo url to new logo and changed marketing text slightly. PAGE TO BE REVIEWED PLEASE / NOT YET CHECKED VISUALLY.
Merge branch 'pr' of github.com:martinschimak/the-job-announcement into martinschimak-pr

Conflicts:
	src/main/resources/CreditsMessages_de.properties
	src/main/resources/CreditsMessages_en.properties