CLOUDSTACK-7645: [UI] Fixing incorrect labels, including instances of "???label.*???"

- removed duplicate entries in dictionary
- added dictionary entries that have been missed during the dictionary split
- added missing entries in messages.properties
- fixed other localization issues
Remove adding implicit tags in DB schema so that management server starts, original commit 39fe766c2b6fb6edd4c1 needs review
Merge branch 'master' of https://git-wip-us.apache.org/repos/asf/cloudstack
Revert "Remove adding implicit tags in DB schema so that management server starts, original commit 39fe766c2b6fb6edd4c1 needs review"

This reverts commit 597d3d70371f71765d1db8292b298b91acb15417.
Revert "CLOUDSTACK-6650: Reorder Cluster list in deployment planner to protect"

This reverts commit 39fe766c2b6fb6edd4c1bf828625b29d9bb87719.
CLOUDSTACK-7668: UI > When UI is loaded the first time, sometimes a blank screen instead of a login screen shows. Only after clicking Refresh button(i.e. loaded again) will the login screen show.