style: add positive attribute to submit buttons (close #113)

web/src/pages/Channel/EditChannel.js

@@ -167,7 +167,7 @@ const EditChannel = () => {
               />
             )
           }
-          <Button onClick={submit}>提交</Button>
+          <Button positive onClick={submit}>提交</Button>
         </Form>
       </Segment>
     </>

web/src/pages/Redemption/EditRedemption.js

@@ -111,7 +111,7 @@ const EditRedemption = () => {
               </Form.Field>
             </>
           }
-          <Button onClick={submit}>提交</Button>
+          <Button positive onClick={submit}>提交</Button>
         </Form>
       </Segment>
     </>

web/src/pages/Token/EditToken.js

@@ -133,6 +133,7 @@ const EditToken = () => {
               type='datetime-local'
             />
           </Form.Field>
+          <div style={{ lineHeight: '40px' }}>
             <Button type={'button'} onClick={() => {
               setExpiredTime(0, 0, 0, 0);
             }}>永不过期</Button>
@@ -148,7 +149,8 @@ const EditToken = () => {
             <Button type={'button'} onClick={() => {
               setExpiredTime(0, 0, 0, 1);
             }}>一分钟后过期</Button>
-          <Button onClick={submit}>提交</Button>
+          </div>
+          <Button positive onClick={submit} style={{marginTop: '12px'}}>提交</Button>
         </Form>
       </Segment>
     </>

web/src/pages/User/AddUser.js

@@ -65,7 +65,7 @@ const AddUser = () => {
               required
             />
           </Form.Field>
-          <Button type={'submit'} onClick={submit}>
+          <Button positive type={'submit'} onClick={submit}>
             提交
           </Button>
         </Form>

web/src/pages/User/EditUser.js

@@ -142,7 +142,7 @@ const EditUser = () => {
               readOnly
             />
           </Form.Field>
-          <Button onClick={submit}>提交</Button>
+          <Button positive onClick={submit}>提交</Button>
         </Form>
       </Segment>
     </>