Miscellaneous front-end changes and resolved with file upload bug

**Front-end changes:**
- Addded ```jquery-ui``` dependency in ```bower.json```.
- ```Logout``` option appearance is corrected.
- Profile image height and width issue fixed.
- Cleaned CSS and SAAS code.

**Other changes:**
- Search in data-review is made form based.
- ```Observation``` added to default ```GAPPS``` list in settings.py file.
- File upload bug resolved.

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**Note :** Please run the following command 
```python manage.py filldb```
```bower install```