* Page for single contract

feature: #9

src/store/contracts.module.js

@@ -1,20 +1,26 @@
-import { getContracts } from '../service/getContracts'
-import HttpClient from '../api/HttpClient'
-import router from '../router'
+import { getContracts, getContractById } from '../service/ContractsService'
 
 export default {
   state: () => ({
-    contracts: []
+    contracts: [],
+    currentContract: null
   }),
   mutations: {
     initContracts(state, data) {
       state.contracts = data
+    },
+    setCurrentContract(state, data) {
+      state.currentContract = data
     }
   },
   actions: {
     async fetchContracts({ commit }) {
       const contracts = await getContracts()
       commit('initContracts', contracts)
+    },
+    async fetchContractById({ commit }, id) {
+      const currentContract = await getContractById(id)
+      commit('setCurrentContract', currentContract)
     }
   },
   getters: {}