Completed Challenges: Date range issues

[SathyaJayabal]

1, Completed Challenges: Date range field is missing a label

The design has label as "from".

2. Date format is incorrect
3. Design is different

4. Once set there is no way to reset the date

[sandhiyakavi]

The above issues are resolved now.

1, Completed Challenges: Date range field is missing a label

Date format is incorrect and Design` is different

Once set there is no way to reset the date
Able to reset now