Remove import for PartSearchParser
move PartSearch declaration inside the try block
PLMaterialServlet.java:Using a blank search form
Add findMaterials(Search), Refactored other methods to use the super class methods for accessing the database
Move FORM  constant to ControllerConstants class, removed variable searchWord no longer need
Updated search box
Move FORM  constant to ControllerConstants class
APLPartServlet:Replace literal constants with constants from ControllerConstants class
Return null not null when there is no value in the Map
No longer implements WebPageForm
Implemented WebPageForm#isEmpty
PartSearch and Search results are stored in the session
APLPartServlet.java: The PartSearch is saved in the session and is used to conduct a search when is page is called. The results are no longer stored in the session
Merge branch 'SearchPage' of https://github.com/subwoofer359/aplsystem into SearchPage