[NX-412] Fix quips being shown on all grids after they are used for a tree node
Use non-depreacated components. Tidy up after plugin-manger refactoring.
[NEXUS-6560] Increase priority for zip mime types to avoid problem with html detection which as same priority
Extract mime-type detection into discrete module
Extract webresources api into discrete module
Merge pull request #508 from sonatype/NX-412-fix-qtips

REVIEW: [NX-412] Fix quick tips being shown on all grids after they are used for a tree node
Merge remote-tracking branch 'origin/master' into quartz-scheduler