remove webapp from admin-ui as it is no longer valid (admin-ui has own .jar) AGPUSH-945
make "X" button close modal buttions AGPUSH-946
remove duplicated message from Add Variant dialog AGPUSH-984
Remove top "Navigation" navbar from Admin UI AGPUSH-952

- plus remove inconsistent 1-pixel height border from Account Management
  screen
Using version 1.0.1-SNAPSHOT
cleanup Device Registration Endpoint and making 'addInstallation' async; adding test for addInstallation
Merge branch 'AGPUSH-945-remove-webapp' of github.com:lfryc/aerogear-unifiedpush-server into lfryc-AGPUSH-945-remove-webapp
Merge branch 'lfryc-AGPUSH-945-remove-webapp'