debian/changelog: cleanup

debian/control: change dsc name to dde-workspace

Change-Id: I23e5260658b67240b2c45843135a200402e44944
fix source name dde-workspace to deepin-desktop-environment

Change-Id: Icedbe48b55fd7e42d50e05a706a14480fd414ef3
res:launcher:: fix others category gets no icon.

tower:https://tower.im/projects/1c0cd0c59ef941298c6e6b2ba6833b91/todos/9a3dfb87020c4695af3872f1816d7c99/#ac97327736134655aa3670ea3c027e28
Change-Id: I1cf8165919156b591ee249f6797f61769240e490