448453: MarketplaceDiscoveryStrategy failed with an error Unsupported search string

- added test

Bug: 448453
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=448453
455400: Node date conversion from REST is incorrect

Bug: 455400
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=455400
fixed swtbot test issue
Merge branch 'master' into 1.3_maintenance
updated version to 1.4.0 for mars
455400: Node date conversion from REST is incorrect

- fixed test

Bug: 455400
Task-Url: https://bugs.eclipse.org/bugs/show_bug.cgi?id=455400
Merge branch '1.3_maintenance'