adjust send button style
adjust send button style

codenvy/codenvy,R-Brain/codenvy,codenvy/codenvy,R-Brain/codenvy,R-Brain/codenvy,codenvy/codenvy,codenvy/codenvy,codenvy/codenvy,codenvy/codenvy,R-Brain/codenvy,R-Brain/codenvy,R-Brain/codenvy