fix date picker issue

Gemfile

@@ -38,5 +38,3 @@ gem 'spring',        group: :development
 # Use debugger
 # gem 'debugger', group: [:development, :test]
 
-gem 'jquery_datepicker'
-gem 'jquery-ui-rails'

Gemfile.lock

@@ -46,9 +46,6 @@ GEM
     jquery-rails (3.1.2)
       railties (>= 3.0, < 5.0)
       thor (>= 0.14, < 2.0)
-    jquery-ui-rails (5.0.2)
-      railties (>= 3.2.16)
-    jquery_datepicker (0.4)
     json (1.8.1)
     mail (2.6.3)
       mime-types (>= 1.16, < 3)
@@ -114,8 +111,6 @@ DEPENDENCIES
   coffee-rails (~> 4.0.0)
   jbuilder (~> 2.0)
   jquery-rails
-  jquery-ui-rails
-  jquery_datepicker
   pg
   rails (= 4.1.7)
   sass-rails (~> 4.0.3)

app/views/projects/_form.html.erb

@@ -24,7 +24,7 @@
     <div class="field">
       <%= f.label :requirements_due %>
       <br>
-      <%= f.date_select :requirements_due %>
+      <%= f.text_field :requirements_due %>
     </div>
     <% if @editing %>
         <div class="field">
@@ -37,7 +37,7 @@
     <div class="field">
       <%= f.label :design_due %>
       <br>
-      <%= f.date_select :design_due %>
+      <%= f.text_field :design_due %>
     </div>
     <% if @editing %>
         <div class="field">
@@ -50,7 +50,7 @@
     <div class="field">
       <%= f.label :devops_due %>
       <br>
-      <%= f.date_select :devops_due %>
+      <%= f.text_field :devops_due %>
     </div>
     <% if @editing %>
         <div class="field">
@@ -63,7 +63,7 @@
     <div class="field">
       <%= f.label :qalaunch_due %>
       <br>
-      <%= f.date_select :qalaunch_due %>
+      <%= f.text_field :qalaunch_due %>
     </div>
     <% if @editing %>
         <div class="field">