consolidate retry logic in error interceptor

remove retry operator from services

src/app/services/db-completion.service.ts

@@ -1,9 +1,9 @@
 import { Injectable } from '@angular/core';
 import { HttpClient, HttpParams } from '@angular/common/http';
 import { environment } from 'src/environments/environment';
-import { apiURL, apiRetry } from '../api-utils';
+import { apiURL } from '../api-utils';
 import { Completion } from '../completion';
-import { retry, map } from 'rxjs/operators';
+import { map } from 'rxjs/operators';
 import { Observable } from 'rxjs';
 import { StType } from '../type';
 
@@ -35,7 +35,6 @@ export class DbCompletionService {
     return this.http
       .get<Completion>(this.dbStatusUrl, httpOptions)
       .pipe(
-        retry(apiRetry),
         map(res => {
           // Remove from array in developement
           // in-memory-web-api returns arrays

src/app/services/db-status.service.ts

@@ -1,12 +1,11 @@
 import { Injectable } from '@angular/core';
 import { HttpClient, HttpHeaders, HttpParams } from '@angular/common/http';
-import { CookieService } from './cookie.service';
 
-import { Observable, of } from 'rxjs';
-import { map, retry, catchError } from 'rxjs/operators';
+import { Observable } from 'rxjs';
+import { map } from 'rxjs/operators';
 
 import { environment } from '../../environments/environment'
-import { apiURL, apiRetry } from '../api-utils'
+import { apiURL } from '../api-utils'
 import Folder from '../folder'
 
 @Injectable({
@@ -28,7 +27,6 @@ export class DbStatusService {
     return this.http
       .get<Folder.Status>(this.dbStatusUrl, httpOptions)
       .pipe(
-        retry(apiRetry),
         map(res => {
           // Remove from array in developement
           // in-memory-web-api returns arrays

src/app/services/system-config.service.ts

@@ -2,12 +2,12 @@ import { Injectable } from '@angular/core';
 import { HttpClient, HttpHeaders } from '@angular/common/http';
 
 import { Observable, Subject } from 'rxjs';
-import { map, retry } from 'rxjs/operators';
+import { map } from 'rxjs/operators';
 
 import Folder from '../folder';
 import Device from '../device';
 import { environment } from '../../environments/environment'
-import { apiURL, apiRetry } from '../api-utils'
+import { apiURL } from '../api-utils'
 import { ProgressService } from './progress.service';
 
 @Injectable({
@@ -32,7 +32,6 @@ export class SystemConfigService {
     return this.http
       .get(this.systemConfigUrl)
       .pipe(
-        retry(apiRetry),
         map(res => {
           this.folders = res['folders'];
           this.devices = res['devices'];

src/app/services/system-connections.service.ts

@@ -1,8 +1,8 @@
 import { Injectable } from '@angular/core';
 import { environment } from 'src/environments/environment';
-import { apiURL, apiRetry } from '../api-utils';
+import { apiURL } from '../api-utils';
 import { HttpClient } from '@angular/common/http';
-import { retry, map } from 'rxjs/operators';
+import { map } from 'rxjs/operators';
 import { Observable } from 'rxjs';
 import { SystemConnections } from '../connections';
 
@@ -18,7 +18,6 @@ export class SystemConnectionsService {
     return this.http
       .get<SystemConnections>(this.systemConfigUrl)
       .pipe(
-        retry(apiRetry),
         map(res => {
           return res;
         })

src/app/services/system-status.service.ts

@@ -1,9 +1,9 @@
 import { Injectable } from '@angular/core';
 import { environment } from 'src/environments/environment';
-import { apiURL, apiRetry } from '../api-utils';
+import { apiURL } from '../api-utils';
 import { Observable } from 'rxjs';
 import { HttpClient } from '@angular/common/http';
-import { retry, map } from 'rxjs/operators';
+import { map } from 'rxjs/operators';
 import { SystemStatus } from '../system-status';
 
 @Injectable({
@@ -19,7 +19,6 @@ export class SystemStatusService {
     return this.http
       .get<SystemStatus>(this.systemStatusUrl)
       .pipe(
-        retry(apiRetry),
         map(res => {
           return res;
         })