fix TOOLS-2504
Merge pull request #44 from wso2-dev/developer-studio-3.7.0

Developer studio 3.7.0
merging after

Merge branch 'developer-studio-3.7.0' of https://github.com/wso2-dev/developer-studio into 370
fix TOOLS-2506
merge before tool 2506
Merge branch '370' of https://github.com/lsdeva/developer-studio into 370
fix TOOLS-2508
fix TOOLS-2507
Merge pull request #85 from lsdeva/370

fix TOOLS-2504, 2508, 2507, 2506
Merge pull request #86 from kaviththiranga/developer-studio-3.7.0

Merging pull-req from kawith - 'Fixing TOOLS-2466'
fix TOOLS-2511
Merge pull request #45 from wso2-dev/developer-studio-3.7.0

Developer studio 3.7.0
fix TOOLS-2512, refactore EsbGraphicalShape class
Merge pull request #87 from lsdeva/370

merge pull req from lali- 'fix TOOLS-2511'