Fix #4068: Fix spelling of participant and deregister button (#4247)

* fix: #3899

* fix: #4068

---------

Co-authored-by: Gunjan Chhablani <chhablani.gunjan@gmail.com>
Co-authored-by: Rishabh Jain <rishabhjain2018@gmail.com>

Author: 3 people

frontend/src/views/web/challenge/edit-challenge/edit-challenge-deregister.html

@@ -3,7 +3,7 @@
         <div class="col s12 m12">
             <div class="ev-card-body pd-20 font-size-16">
                 <form name="Deregisterform" ng-submit="challenge.deregister(Deregisterform.$valid)">
-                    <div class="pass-title">Deregister Partipant Team</div>
+                    <div class="pass-title">Deregister Participant Team</div>
                     <div class="input-field align-left">
                         <span class="form-icon"> Are you sure you want to deregister team: <b>{{challenge.participated_team_name}} </b>?<i class="fa fa-text"></i></span>
                       </div>
@@ -12,7 +12,8 @@
                             <a ng-click="challenge.deregister(false)" class="dark-link pointer"><strong>Cancel</strong></a>
                         </li>
                         <li>
-                            <button class="btn ev-btn-dark waves-effect waves-dark grad-btn grad-btn-dark fs-14" type="submit" value="submit">Deregister</button>
+                            <button class="btn ev-btn-dark waves-effect waves-dark grad-btn grad-btn-dark fs-14" type="submit" value="submit" style="padding: 8px 12px;">Deregister</button>
+
                         </li>
                     </ul>
                 </form>

frontend/src/views/web/teams.html

@@ -69,7 +69,7 @@ <h6><b>Team Members:</b></h6>
                             <input id="name" type="text" class="validate text-dark-black dark-autofill w-400" ng-model="teams.team.name" ng-pattern="/^[\w -.]*$/" focus-if>
                             <span class="form-icon form-icon-dark"><i class="fa fa-user"></i></span>
                             <label for="name" data-error="wrong" data-success="right">Team Name*</label>
-                            <div class="wrn-msg text-highlight" ng-show="teams.team.error">{{teams.team.error}}</div>
+                            <div class="wrn-msg text-highlight" ng-show="teams.team.error">{{teams.team.error || 'Invalid naming'}}</div>
                         </div>
                         <div class="input-field align-left">
                             <input id="url" type="text" class="validate text-dark-black dark-autofill w-400" ng-model="teams.team.url" focus-if>