WSOTWO-71: Updated to 3.0.0 version of SDK
Merge remote-tracking branch 'origin/master' into WSOTWO-92

Conflicts:
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/WSO2ClientService.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/WSO2ClientServiceImpl.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/action/LoginAction.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/editor/text/XmlCompletionProposal.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/upload/ImportFilePresenter.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/upload/ImportFileView.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/upload/ImportFileViewImpl.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/upload/overwrite/OverwriteFilePresenter.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/upload/overwrite/OverwriteFileView.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/upload/overwrite/OverwriteFileViewImpl.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/wizard/files/AbstractCreateResourcePage.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/wizard/files/CreateEndpointPage.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/wizard/files/CreateLocalEntryPage.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/wizard/files/CreateProxyServicePage.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/wizard/files/CreateSequencePage.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/client/wizard/project/WSO2PagePresenter.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/server/oauth/WSO2OAuthAuthenticator.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/server/oauth/WSO2OAuthAuthenticatorProvider.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/server/projecttypes/WSO2ProjectTypeDescriptionExtension.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/server/projecttypes/WSO2ProjectTypeExtension.java
	codenvy-ext-wso2-core/src/main/java/com/codenvy/ide/ext/wso2/server/rest/WSO2RestService.java
WSOTWO-92: merged with master