Satosa backend pending tasks

[peppelinux]

• [x] #154
• [x] #155
• [x] #156
• [x] #157
• [x] #158
• [x] #159
• [x] #160
• [x] #161
• [ ] #162
• [x] #163
• [x] #164
• [x] #141
• [ ] #165
• [ ] #166
• [x] #167
• [x] #168
• [x] #169
• [x] #139
• [x] #170
• [x] #146
• [x] #171
• [ ] #172

[peppelinux]

To be continued in the single issues