LB-693: Broken calls when no sms feeds

fixed
NR-893: Thumbnail image creation (Media Archive)
* fixed heights for thumbnails
NR-893: Thumbnail image creation (Media Archive)
* adjusted
LB-699 : Upload popup > Searchbox doesn't look good

Fixed
LB-457: Link post: Fail to grab link's description with unicode text
* fixed (but can not assure proper work on too broken sites)
LB-482: user comments
* added captcha connection
LB-482: user comments
* adjusted
LB-482: user comments
* adjusted
LB-705: On configure blog add http: in at the beginning of provider link

Allow urls starting with // and remove http placeholder.
Merge pull request #163 from petrjasek/lb-702-add-provider-multiple-modals

LB-702: Manage feed add provider window multiple modals
Merge pull request #164 from nidzix/styling-improvment

LB-699 : Upload popup > Searchbox doesn't look good
LB-457: Link post: Fail to grab link's description with unicode text
* adjusted
Merge pull request #152 from msat-cont/nr-893-thumbnails-fixed-height-devel

NR-893 thumbnails fixed height devel
Merge pull request #158 from msat-cont/lb-457-link-posts

LB-457: Link post: Fail to grab link's description with unicode text
LB-446: SMS source plugin
* filtering of posts by allowed sources of a given source type
LB-446: SMS source plugin
* adjusted: to avoid mismatches after merging from aap
Merge pull request #161 from petrjasek/lb-704-external-title-desc

LB-704: On chained blog providers some blogs has HTML formating on title...
Merge branch 'devel' into sms-filtering-devel

Conflicts:
	plugins/livedesk/livedesk/impl/blog.py
SMS filtering
* merge fix
Merge pull request #166 from msat-cont/sms-filtering-devel

LB-446: SMS source plugin